[ Eq(Derivative(x1, t), ((-1)*x5*x1**2/(x1**2 + k6**2) + 1*(1 - k18)*(k7 + (1 - x3)*k1*x2**2/(x2**2 + k9**2)*x1**2/(x1**2 + k13**2))*x9 + 1*x6*(k10 + k11**8/(x9**8 + k11**8)) + (-1)*x4*x1**2/(x1**2 + k14**2) + (-1)*k21*x1**4/(x1**4 + k19**4) + 1*k20*x8/(x8 + 1/100))/k23),
  Eq(Derivative(x2, t), (1*k8*x1 + (-1)*k3*x2)/k23),
  Eq(Derivative(x3, t), (1*k4*x1**4/(x1**4 + k16**4)*(1 - x3) + (-1)*k5*x3)/k23),
  Eq(Derivative(x4, t), (1*k22*k17*k15*x1**4/((k22 - 1)*(1/20)**4 + x1**4) + (-1)*x4*k17)/k23),
  Eq(Derivative(x5, t), (1*1/k22*k2*k17*((k22 - 1)*2**4 + x9**4)/x9**4 + (-1)*x5*k17)/k23),
  Eq(Derivative(x6, t), (1*1/(k22*k22)*k12*k17*((k22 - 1)*2**2 + x9**2)/x9**2*((k22 - 1)*(1/20)**2 + x1**2)/x1**2 + (-1)*x6*k17)/k23),
  Eq(Derivative(x7, t), 0/k24),
  Eq(Derivative(x8, t), (1*k21*x1**4/(x1**4 + k19**4) + 1*k18*(k7 + (1 - x3)*k1*x2**2/(x2**2 + k9**2)*x1**2/(x1**2 + k13**2))*x9 + (-1)*k20*x8/(x8 + 1/100))/k25),
  Eq(Derivative(x9, t), (1*x5*x1**2/(x1**2 + k6**2) + (-1)*(1 - k18)*(k7 + (1 - x3)*k1*x2**2/(x2**2 + k9**2)*x1**2/(x1**2 + k13**2))*x9 + (-1)*k18*(k7 + (1 - x3)*k1*x2**2/(x2**2 + k9**2)*x1**2/(x1**2 + k13**2))*x9)/k26) ]