[ Eq(Derivative(x1, t), ((-1)*k1*(k2*k22*x1 - k3*x2) + 1*k1*(k8*x5 - k9*x1*x6))/k1),
  Eq(Derivative(x2, t), (1*k1*(k2*k22*x1 - k3*x2) + (-1)*k1*(k4*x2 - k5*k23*x3))/k1),
  Eq(Derivative(x3, t), (1*k1*(k4*x2 - k5*k23*x3) + (-1)*k1*(k6*x3*x4 - k7*x5))/k1),
  Eq(Derivative(x4, t), ((-1)*k1*(k6*x3*x4 - k7*x5) + 1*k1*(k12*x8 - k13*x4*x9))/k1),
  Eq(Derivative(x5, t), (1*k1*(k6*x3*x4 - k7*x5) + (-1)*k1*(k8*x5 - k9*x1*x6))/k1),
  Eq(Derivative(x6, t), (1*k1*(k8*x5 - k9*x1*x6) + (-1)*k1*(k10*x6*x7 - k11*x8))/k1),
  Eq(Derivative(x7, t), ((-1)*k1*(k10*x6*x7 - k11*x8) + 1*k1*(k16*x11 - k17*x7*x12))/k1),
  Eq(Derivative(x8, t), (1*k1*(k10*x6*x7 - k11*x8) + (-1)*k1*(k12*x8 - k13*x4*x9))/k1),
  Eq(Derivative(x9, t), (1*k1*(k12*x8 - k13*x4*x9) + (-1)*k1*(k14*x9*x10 - k15*x11))/k1),
  Eq(Derivative(x10, t), ((-1)*k1*(k14*x9*x10 - k15*x11) + 1*k1*(k20*x13 - k21*x10*k24))/k1),
  Eq(Derivative(x11, t), (1*k1*(k14*x9*x10 - k15*x11) + (-1)*k1*(k16*x11 - k17*x7*x12))/k1),
  Eq(Derivative(x12, t), (1*k1*(k16*x11 - k17*x7*x12) + (-1)*k1*(k18*x12*k25 - k19*x13))/k1),
  Eq(Derivative(x13, t), (1*k1*(k18*x12*k25 - k19*x13) + (-1)*k1*(k20*x13 - k21*x10*k24))/k1),
  Eq(Derivative(x14, t), 0),
  Eq(Derivative(x15, t), 0),
  Eq(Derivative(x16, t), 0),
  Eq(Derivative(x17, t), 0) ]