[ Eq(Derivative(x1, t), ((-1)*k3*(k14*x6*x1 - k15*x12) + (-1)*k3*(k16*x7*x1 - k17*x13) + (-1)*k3*(k32*x11*x1 - k33*x16))/k3),
  Eq(Derivative(x2, t), ((-1)*k3*(k4*x2*x4 - k5*x6) + 1*k3*(k8*x7 - k9*x2*x9))/k3),
  Eq(Derivative(x3, t), (1*k3*(k26*x13 - k27*x3*x9) + (-1)*k3*(k28*x3*x5 - k29*x15))/k3),
  Eq(Derivative(x4, t), ((-1)*k3*(k4*x2*x4 - k5*x6) + (-1)*k3*(k10*x10*x4 - k11*x11) + (-1)*k3*(k30*x15*x4 - k31*x16))/k3),
  Eq(Derivative(x5, t), ((-1)*k3*(k12*x6*x5 - k13*x11) + (-1)*k3*(k18*x7*x5 - k19*x14) + (-1)*k3*(k28*x3*x5 - k29*x15))/k3),
  Eq(Derivative(x6, t), (1*k3*(k4*x2*x4 - k5*x6) + (-1)*k3*(k6*x6 - k7*x7*x8) + (-1)*k3*(k12*x6*x5 - k13*x11) + (-1)*k3*(k14*x6*x1 - k15*x12))/k3),
  Eq(Derivative(x7, t), (1*k3*(k6*x6 - k7*x7*x8) + (-1)*k3*(k8*x7 - k9*x2*x9) + (-1)*k3*(k16*x7*x1 - k17*x13) + (-1)*k3*(k18*x7*x5 - k19*x14))/k3),
  Eq(Derivative(x8, t), (1*k3*(k6*x6 - k7*x7*x8) + 1*k3*(k20*x11 - k21*x14*x8) + 1*k3*(k24*x12 - k25*x13*x8) + 1*k3*(k34*x16 - k35*x17*x8))/k3),
  Eq(Derivative(x9, t), (1*k3*(k8*x7 - k9*x2*x9) + 1*k3*(k22*x14 - k23*x10*x9) + 1*k3*(k26*x13 - k27*x3*x9) + 1*k3*(k36*x17 - k37*x15*x9))/k3),
  Eq(Derivative(x10, t), ((-1)*k3*(k10*x10*x4 - k11*x11) + 1*k3*(k22*x14 - k23*x10*x9))/k3),
  Eq(Derivative(x11, t), (1*k3*(k10*x10*x4 - k11*x11) + 1*k3*(k12*x6*x5 - k13*x11) + (-1)*k3*(k20*x11 - k21*x14*x8) + (-1)*k3*(k32*x11*x1 - k33*x16))/k3),
  Eq(Derivative(x12, t), (1*k3*(k14*x6*x1 - k15*x12) + (-1)*k3*(k24*x12 - k25*x13*x8))/k3),
  Eq(Derivative(x13, t), (1*k3*(k16*x7*x1 - k17*x13) + 1*k3*(k24*x12 - k25*x13*x8) + (-1)*k3*(k26*x13 - k27*x3*x9))/k3),
  Eq(Derivative(x14, t), (1*k3*(k18*x7*x5 - k19*x14) + 1*k3*(k20*x11 - k21*x14*x8) + (-1)*k3*(k22*x14 - k23*x10*x9))/k3),
  Eq(Derivative(x15, t), (1*k3*(k28*x3*x5 - k29*x15) + (-1)*k3*(k30*x15*x4 - k31*x16) + 1*k3*(k36*x17 - k37*x15*x9))/k3),
  Eq(Derivative(x16, t), (1*k3*(k30*x15*x4 - k31*x16) + 1*k3*(k32*x11*x1 - k33*x16) + (-1)*k3*(k34*x16 - k35*x17*x8))/k3),
  Eq(Derivative(x17, t), (1*k3*(k34*x16 - k35*x17*x8) + (-1)*k3*(k36*x17 - k37*x15*x9))/k3) ]