[ Eq(Derivative(x1, t), ((-1)*k24*k2*x1*x2 + 1*k24*k3*x3 + (-1)*k24*k11*x1*x8 + 1*k24*k12*x9 + (-1)*k24*k15*x1*x5 + 1*k24*k16*x6 + (-1)*k24*k19*x1)/k24),
  Eq(Derivative(x2, t), (1*k24*k1 + (-1)*k24*k2*x1*x2 + 1*k24*k3*x3 + 1*k24*k5*x3*(1 + x2 + x5 + x8) + (-1)*k24*k6*x2)/k24),
  Eq(Derivative(x3, t), (1*k24*k2*x1*x2 + (-1)*k24*k3*x3 + (-1)*k24*k4*x3 + (-1)*k24*k5*x3*(1 + x2 + x5 + x8))/k24),
  Eq(Derivative(x4, t), (1*k24*k4*x3 + 1*k24*k6*x2)/k24),
  Eq(Derivative(x5, t), (1*k24*k7*(1 + k20*x2) + (-1)*k24*k8*x5 + (-1)*k24*k15*x1*x5 + 1*k24*k16*x6)/k24),
  Eq(Derivative(x6, t), (1*k24*k15*x1*x5 + (-1)*k24*k16*x6 + (-1)*k24*k17*x6 + (-1)*k24*k18*x6*(1 + x2 + x5 + x8))/k24),
  Eq(Derivative(x7, t), (1*k24*k8*x5 + 1*k24*k17*x6)/k24),
  Eq(Derivative(x8, t), (1*k24*k9*(1 + k23*x8 + k21*x5 + k22*x2) + (-1)*k24*k10*x8 + (-1)*k24*k11*x1*x8 + 1*k24*k12*x9)/k24),
  Eq(Derivative(x9, t), (1*k24*k11*x1*x8 + (-1)*k24*k12*x9 + (-1)*k24*k13*x9 + (-1)*k24*k14*x9*(1 + x2 + x5 + x8))/k24),
  Eq(Derivative(x10, t), (1*k24*k10*x8 + 1*k24*k13*x9)/k24),
  Eq(Derivative(x11, t), 1*k24*k14*x9*(1 + x2 + x5 + x8)/k24),
  Eq(Derivative(x12, t), 1*k24*k18*x6*(1 + x2 + x5 + x8)/k24),
  Eq(Derivative(x13, t), 1*k24*k5*x3*(1 + x2 + x5 + x8)/k24) ]