[ Eq(Derivative(x1, t), 0/k28),
  Eq(Derivative(x2, t), (1*k17*(k27*k23/(k11 + k23) - x2)*(x1 - x2) + (-1)*(k4*k15*x3/(k16 + x3)*(x6/(k10 + x6))**3*x2 - k5*(x3/(k11 + x3))**2 + k6*x2*x2))/k30),
  Eq(Derivative(x3, t), (1*((-k7)*x3*(k18 - x4) + k8*x4) + 1*(k4*k15*x3/(k16 + x3)*(x6/(k10 + x6))**3*x2 - k5*(x3/(k11 + x3))**2 + k6*x2*x2) + (-1)*k21*x3**4/(k14**4 + x3**4) + (-1)*k20*x3/(k13 + x3) + 1*k22 + (-1)*k19*x3**2/(k12**2 + x3**2))/k29),
  Eq(Derivative(x4, t), (-1)*((-k7)*x3*(k18 - x4) + k8*x4)/k29),
  Eq(Derivative(x5, t), (-1)*k17*(k27*k23/(k11 + k23) - x2)*(x1 - x2)/k28),
  Eq(Derivative(x6, t), (1*k2*(k1 - k26*k1*(exp((-x12)/k24) + exp((-x12)/k25) + (exp((-x12)/k24) - exp((-x12)/k25))*(k24 + k25)/(k24 - k25)))*x3/(k9 + x3) + (-1)*k3*x6)/k29),
  Eq(Derivative(x7, t), (-1)*k2*(k1 - k26*k1*(exp((-x12)/k24) + exp((-x12)/k25) + (exp((-x12)/k24) - exp((-x12)/k25))*(k24 + k25)/(k24 - k25)))*x3/(k9 + x3)/k29),
  Eq(Derivative(x8, t), 1*k3*x6/k29),
  Eq(Derivative(x9, t), (1*k21*x3**4/(k14**4 + x3**4) + 1*k19*x3**2/(k12**2 + x3**2))/k29),
  Eq(Derivative(x10, t), 1*k20*x3/(k13 + x3)/k29),
  Eq(Derivative(x11, t), (-1)*k22/k29),
  Eq(Derivative(x12, t), 1*k31/k28),
  Eq(Derivative(x13, t), (-1)*k31/k28),
  Eq(Derivative(x14, t), 0/k28) ]