{ diff(x1, t) = ((-1)*k9*x59*x1 + (-1)*k9*x60*x1 + (-1)*k10*x64*x1 + (-1)*k10*x71*x1 + (-1)*k10*x69*x1 + 1*k15*k22*x4 + 1*k15*k23*x5 + 1*k4*x22 + 1*k4*x16 + 1*k4*x17 + 1*k4*x18 + 1*k4*x19 + 1*k4*x20 + 1*k4*x21 + 1*k10*x21*x70 + (-1)*k10*x1*x61 + (-1)*k10*x1*x65 + (-1)*k10*x1*x72 + (-1)*k3*x1*x58)/k15,
  diff(x2, t) = (1*k15*k22*x4 + (-1)*k15*k25*x2)/k15,
  diff(x3, t) = (1*k15*k23*x5 + (-1)*k15*k24*x3)/k15,
  diff(x4, t) = (1*k9*x59*x1 + (-1)*k15*k22*x4 + (-1)*k2*x59*x4)/k15,
  diff(x5, t) = (1*k9*x60*x1 + (-1)*k15*k23*x5 + 1*k2*x59*x4 + (-1)*k6*x59*x5)/k15,
  diff(x6, t) = 1*k15*k24*x3/k15,
  diff(x7, t) = 1*k15*k25*x2/k15,
  diff(x8, t) = (1*k2*x58*x23 + (-1)*k6*x8*x58)/k15,
  diff(x9, t) = (1*k6*x8*x58 + (-1)*k6*x9*x58)/k15,
  diff(x10, t) = (1*k6*x9*x58 + (-1)*k6*x10*x58)/k15,
  diff(x11, t) = (1*k6*x58*x12 + (-1)*k6*x58*x11)/k15,
  diff(x12, t) = ((-1)*k6*x58*x12 + 1*k6*x13*x58)/k15,
  diff(x13, t) = (1*k6*x10*x58 + (-1)*k6*x13*x58)/k15,
  diff(x14, t) = (1*k6*x58*x11 + (-1)*k6*x58*x14)/k15,
  diff(x15, t) = 1*k6*x58*x14/k15,
  diff(x16, t) = ((-1)*k4*x16 + 1*k10*x1*x61 + 1*k6*x59*x5 + (-1)*k6*x59*x16)/k15,
  diff(x17, t) = ((-1)*k4*x17 + 1*k10*x1*x65 + 1*k6*x59*x16 + (-1)*k6*x59*x17)/k15,
  diff(x18, t) = (1*k10*x64*x1 + (-1)*k4*x18 + 1*k6*x59*x17 + (-1)*k6*x18*x59)/k15,
  diff(x19, t) = ((-1)*k4*x19 + 1*k10*x1*x72 + 1*k6*x18*x59 + (-1)*k6*x19*x59)/k15,
  diff(x20, t) = (1*k10*x71*x1 + (-1)*k4*x20 + 1*k6*x19*x59 + (-1)*k6*x59*x20)/k15,
  diff(x21, t) = ((-1)*k4*x21 + (-1)*k10*x21*x70 + 1*k6*x59*x20 + (-1)*k6*x59*x21)/k15,
  diff(x22, t) = (1*k10*x69*x1 + (-1)*k4*x22 + 1*k6*x59*x21)/k15,
  diff(x23, t) = ((-1)*k2*x58*x23 + 1*k3*x1*x58)/k15,
  diff(x24, t) = (1*k16*k14*x40 + 1*k16*k14*x50)/k16,
  diff(x25, t) = 1*k16*k14*x39/k16,
  diff(x26, t) = 1*k16*k14*x36/k16,
  diff(x27, t) = 1*k16*k14*x37/k16,
  diff(x28, t) = 1*k16*k14*x38/k16,
  diff(x29, t) = 1*k16*k14*x41/k16,
  diff(x30, t) = 1*k16*k14*x42/k16,
  diff(x31, t) = (1*k16*k14*x52 + 1*k16*k14*x51)/k16,
  diff(x32, t) = 1*k16*k14*x49/k16,
  diff(x33, t) = 1*k16*k14*x48/k16,
  diff(x34, t) = 1*k16*k14*x47/k16,
  diff(x35, t) = 1*k16*k14*x44/k16,
  diff(x36, t) = (1*k5*x65 + (-1)*k16*k14*x36)/k16,
  diff(x37, t) = (1*k5*x64 + (-1)*k16*k14*x37)/k16,
  diff(x38, t) = (1*k5*x72 + (-1)*k16*k14*x38)/k16,
  diff(x39, t) = (1*k5*x61 + (-1)*k16*k14*x39)/k16,
  diff(x40, t) = (1*k5*x60 + (-1)*k16*k14*x40)/k16,
  diff(x41, t) = (1*k5*x71 + (-1)*k16*k14*x41)/k16,
  diff(x42, t) = (1*k5*x70 + (-1)*k16*k14*x42)/k16,
  diff(x43, t) = (1*k16*k14*x46 + 1*k16*k14*x45)/k16,
  diff(x44, t) = (1*k5*x67 + (-1)*k16*k14*x44)/k16,
  diff(x45, t) = (1*k5*x66 + (-1)*k16*k14*x45)/k16,
  diff(x46, t) = (1*k5*x62 + (-1)*k16*k14*x46)/k16,
  diff(x47, t) = (1*k5*x53 + (-1)*k16*k14*x47)/k16,
  diff(x48, t) = (1*k5*x54 + (-1)*k16*k14*x48)/k16,
  diff(x49, t) = (1*k5*x56 + (-1)*k16*k14*x49)/k16,
  diff(x50, t) = (1*k5*x59 + (-1)*k16*k14*x50)/k16,
  diff(x51, t) = (1*k5*x58 + (-1)*k16*k14*x51)/k16,
  diff(x52, t) = (1*k5*x57 + (-1)*k16*k14*x52)/k16,
  diff(x53, t) = (1*k17*k6*x54*x58 + (-1)*k5*x53 + (-1)*k17*k6*x53*x58 + (-1)*k17*k7*x53*x74 + 1*k17*k1*x62 + (-1)*k17*k1*x53)/k17,
  diff(x54, t) = (1*k17*k6*x56*x58 + (-1)*k5*x54 + (-1)*k17*k6*x54*x58 + (-1)*k17*k7*x54*x74 + (-1)*k17*k1*x54 + 1*k17*k1*x53)/k17,
  diff(x55, t) = 0,
  diff(x56, t) = (1*k17*k6*x57*x58 + (-1)*k5*x56 + (-1)*k17*k6*x56*x58 + (-1)*k17*k7*x56*x74 + 1*k17*k1*x54 + (-1)*k17*k1*x56)/k17,
  diff(x57, t) = (1*k17*k2*x58^2 + (-1)*k5*x57 + (-1)*k17*k6*x57*x58 + 1*k17*k1*x56 + (-1)*k17*k1*x57)/k17,
  diff(x58, t) = (1*k17*k20*x59*x63 + (-2)*k17*k2*x58^2 + (-1)*k2*x58*x23 + (-1)*k6*x58*x12 + (-1)*k6*x58*x11 + (-1)*k6*x58*x14 + (-1)*k17*k6*x57*x58 + (-1)*k17*k6*x56*x58 + (-1)*k17*k6*x54*x58 + (-1)*k17*k6*x53*x58 + (-1)*k17*k6*x62*x58 + (-1)*k17*k6*x66*x58 + (-1)*k17*k6*x67*x58 + (-1)*k6*x8*x58 + (-1)*k6*x9*x58 + (-1)*k6*x10*x58 + (-1)*k6*x13*x58 + (-1)*k3*x1*x58 + 1*k17*k1*x68 + 1*k17*k1*x67 + 1*k17*k1*x66 + 1*k17*k1*x62 + 1*k17*k1*x54 + 1*k17*k1*x53 + 1*k17*k1*x56 + 2*k17*k1*x57 + (-1)*k5*x58)/k17,
  diff(x59, t) = (1*k17*k18*k27 + (-2)*k17*k2*x59^2 + (-1)*k17*k20*x59*x63 + (-1)*k9*x59*x1 + (-1)*k17*k6*x60*x59 + (-1)*k17*k6*x61*x59 + (-1)*k17*k6*x65*x59 + (-1)*k17*k6*x64*x59 + (-1)*k17*k6*x72*x59 + (-1)*k17*k6*x71*x59 + (-1)*k17*k6*x70*x59 + (-1)*k17*k6*x69*x59 + (-1)*k2*x59*x4 + (-1)*k6*x59*x5 + (-1)*k6*x59*x16 + (-1)*k6*x59*x17 + (-1)*k6*x18*x59 + (-1)*k6*x19*x59 + (-1)*k6*x59*x20 + (-1)*k6*x59*x21 + 1*k17*k1*x69 + 1*k17*k1*x70 + 1*k17*k1*x71 + 1*k17*k1*x72 + 1*k17*k1*x64 + 1*k17*k1*x65 + 1*k17*k1*x61 + 2*k17*k1*x60 + (-1)*k17*k26*x73*x59 + (-1)*k5*x59)/k17,
  diff(x60, t) = (1*k17*k2*x59^2 + (-1)*k5*x60 + (-1)*k17*k6*x60*x59 + (-1)*k9*x60*x1 + 1*k17*k1*x61 + (-1)*k17*k1*x60)/k17,
  diff(x61, t) = (1*k17*k6*x60*x59 + (-1)*k5*x61 + (-1)*k17*k6*x61*x59 + (-1)*k17*k7*x61*x74 + 1*k4*x16 + (-1)*k10*x1*x61 + 1*k17*k1*x65 + (-1)*k17*k1*x61)/k17,
  diff(x62, t) = (1*k17*k6*x53*x58 + (-1)*k5*x62 + (-1)*k17*k6*x62*x58 + (-1)*k17*k7*x62*x74 + 1*k17*k1*x66 + (-1)*k17*k1*x62)/k17,
  diff(x63, t) = (1*k17*k19*k27 + (-1)*k17*k20*x59*x63 + (-1)*k17*k21*x63)/k17,
  diff(x64, t) = (1*k17*k6*x65*x59 + (-1)*k5*x64 + (-1)*k17*k6*x64*x59 + (-1)*k17*k7*x64*x74 + (-1)*k10*x64*x1 + 1*k4*x18 + 1*k17*k1*x72 + (-1)*k17*k1*x64)/k17,
  diff(x65, t) = (1*k17*k6*x61*x59 + (-1)*k5*x65 + (-1)*k17*k6*x65*x59 + (-1)*k17*k7*x65*x74 + 1*k4*x17 + (-1)*k10*x1*x65 + 1*k17*k1*x64 + (-1)*k17*k1*x65)/k17,
  diff(x66, t) = (1*k17*k6*x62*x58 + (-1)*k5*x66 + (-1)*k17*k6*x66*x58 + (-1)*k17*k7*x66*x74 + 1*k17*k1*x67 + (-1)*k17*k1*x66)/k17,
  diff(x67, t) = (1*k17*k6*x66*x58 + (-1)*k5*x67 + (-1)*k17*k6*x67*x58 + (-1)*k17*k7*x67*x74 + 1*k17*k1*x68 + (-1)*k17*k1*x67)/k17,
  diff(x68, t) = (1*k17*k6*x67*x58 + (-1)*k17*k7*x68*x74 + (-1)*k17*k1*x68)/k17,
  diff(x69, t) = (1*k17*k6*x70*x59 + (-1)*k17*k7*x69*x74 + (-1)*k10*x69*x1 + (-1)*k17*k6*x69*x59 + 1*k4*x22 + (-1)*k17*k1*x69)/k17,
  diff(x70, t) = (1*k17*k6*x71*x59 + (-1)*k5*x70 + (-1)*k17*k6*x70*x59 + (-1)*k17*k7*x70*x74 + 1*k4*x21 + (-1)*k10*x21*x70 + 1*k17*k1*x69 + (-1)*k17*k1*x70)/k17,
  diff(x71, t) = (1*k17*k6*x72*x59 + (-1)*k5*x71 + (-1)*k17*k6*x71*x59 + (-1)*k17*k7*x71*x74 + (-1)*k10*x71*x1 + 1*k4*x20 + 1*k17*k1*x70 + (-1)*k17*k1*x71)/k17,
  diff(x72, t) = (1*k17*k6*x64*x59 + (-1)*k5*x72 + (-1)*k17*k6*x72*x59 + (-1)*k17*k7*x72*x74 + 1*k4*x19 + (-1)*k10*x1*x72 + 1*k17*k1*x71 + (-1)*k17*k1*x72)/k17,
  diff(x73, t) = (1*k17*k6*x69*x59 + (-1)*k17*k7*x73*x74)/k17,
  diff(x74, t) = ((-1)*k17*k7*x61*x74 + (-1)*k17*k7*x65*x74 + (-1)*k17*k7*x64*x74 + (-1)*k17*k7*x72*x74 + (-1)*k17*k7*x71*x74 + (-1)*k17*k7*x70*x74 + (-1)*k17*k7*x69*x74 + (-1)*k17*k7*x56*x74 + (-1)*k17*k7*x54*x74 + (-1)*k17*k7*x53*x74 + (-1)*k17*k7*x62*x74 + (-1)*k17*k7*x66*x74 + (-1)*k17*k7*x67*x74 + (-1)*k17*k7*x68*x74 + 1*k17*k8*x76 + 1*k17*k8*x77 + 1*k17*k8*x78 + 1*k17*k8*x79 + 1*k17*k8*x80 + 1*k17*k8*x81 + 1*k17*k8*x82 + 1*k17*k8*x83 + 1*k17*k8*x84 + 1*k17*k8*x85 + 1*k17*k8*x86 + 1*k17*k8*x87 + 1*k17*k8*x88 + 1*k17*k8*x89 + (-1)*k17*k7*x73*x74)/k17,
  diff(x75, t) = 1*k17*k21*x63/k17,
  diff(x76, t) = (1*k17*k7*x61*x74 + (-1)*k17*k8*x76)/k17,
  diff(x77, t) = (1*k17*k7*x65*x74 + (-1)*k17*k8*x77)/k17,
  diff(x78, t) = (1*k17*k7*x64*x74 + (-1)*k17*k8*x78)/k17,
  diff(x79, t) = (1*k17*k7*x72*x74 + (-1)*k17*k8*x79)/k17,
  diff(x80, t) = (1*k17*k7*x71*x74 + (-1)*k17*k8*x80)/k17,
  diff(x81, t) = (1*k17*k7*x70*x74 + (-1)*k17*k8*x81)/k17,
  diff(x82, t) = (1*k17*k7*x69*x74 + (-1)*k17*k8*x82)/k17,
  diff(x83, t) = (1*k17*k7*x56*x74 + (-1)*k17*k8*x83)/k17,
  diff(x84, t) = (1*k17*k7*x54*x74 + (-1)*k17*k8*x84)/k17,
  diff(x85, t) = (1*k17*k7*x53*x74 + (-1)*k17*k8*x85)/k17,
  diff(x86, t) = (1*k17*k7*x62*x74 + (-1)*k17*k8*x86)/k17,
  diff(x87, t) = (1*k17*k7*x66*x74 + (-1)*k17*k8*x87)/k17,
  diff(x88, t) = (1*k17*k7*x67*x74 + (-1)*k17*k8*x88)/k17,
  diff(x89, t) = (1*k17*k7*x68*x74 + (-1)*k17*k8*x89)/k17,
  diff(x90, t) = 1*k17*k7*x73*x74/k17 }