[ Eq(Derivative(x1, t), ((-1)*k17*x1*(1 - k6*(k16*k9/(1 + x6/k15) + k16*(1 - (k9 + k10)) + k16*k10)/k5)*k3 + (-1)*k17*x1*(1 - (1 - k6*(k16*k9/(1 + x6/k15) + k16*(1 - (k9 + k10)) + k16*k10)/k5)*k3))/k32),
  Eq(Derivative(x2, t), ((-1)*k19*x2*k20 + (-1)*k19*x2*(1 - k20))/k32),
  Eq(Derivative(x3, t), (-1)*k18*x3/k32),
  Eq(Derivative(x4, t), (1*k17*x1*(1 - k6*(k16*k9/(1 + x6/k15) + k16*(1 - (k9 + k10)) + k16*k10)/k5)*k3 + (-1)*k16*k9/(1 + x6/k15)*x4 + (-1)*k16*k10*x4 + (-1)*k16*(1 - (k9 + k10))*x4)/k33),
  Eq(Derivative(x5, t), (1*k16*k10*x4 + (-1)*k21*x5)/k34),
  Eq(Derivative(x6, t), (1*k18*x3 + 1*k23/(1 - k23)*k22*x8 + (-1)*k24*x6 + (-1)*k26*(x6 - x7))/k37),
  Eq(Derivative(x7, t), 1*k26*(x6 - x7)/k38),
  Eq(Derivative(x8, t), (1*k19*x2*k20 + (-1)*k22*x8 + (-1)*k23/(1 - k23)*k22*x8 + (-1)*k25*(x8 - x9))/k35),
  Eq(Derivative(x9, t), 1*k25*(x8 - x9)/k36) ]