[ Eq(Derivative(x1, t), ((-1)*k47*k40*x1*x2 + (-1)*k47*k38*x10 + 1*k47*k27*x3)/k47),
  Eq(Derivative(x2, t), ((-1)*k47*k40*x1*x2 + (-1)*k47*k19*x2*k46*k4*Piecewise((1 - exp((-(t - k6))/k8), And(Ge(t, k6), Le(t, k10))), (Piecewise((exp((-(t - k10))/k8), Gt(t, k10)), (0, True)), True)) + 1*k47*k33*x17 + 1*k47*k27*x3)/k47),
  Eq(Derivative(x3, t), (1*k47*k40*x1*x2 + (-1)*k47*k41*x3*x4*k45*Piecewise((k3*(1 - exp((-(t - k5))/k7)), And(Ge(t, k5), Le(t, k9))), (Piecewise((k3*exp((-(t - k5))/k7), Ge(t, k9)), (0, True)), True)) + (-1)*k47*k27*x3)/k47),
  Eq(Derivative(x4, t), ((-1)*k47*k41*x3*x4*k45*Piecewise((k3*(1 - exp((-(t - k5))/k7)), And(Ge(t, k5), Le(t, k9))), (Piecewise((k3*exp((-(t - k5))/k7), Ge(t, k9)), (0, True)), True)) + 1*k47*k38*x10)/k47),
  Eq(Derivative(x5, t), (1*k47*k41*x3*x4*k45*Piecewise((k3*(1 - exp((-(t - k5))/k7)), And(Ge(t, k5), Le(t, k9))), (Piecewise((k3*exp((-(t - k5))/k7), Ge(t, k9)), (0, True)), True)) + (-1)*k47*k11*x5*x6 + (-1)*k47*k15*x5*x13)/k47),
  Eq(Derivative(x6, t), ((-1)*k47*k11*x5*x6 + (-1)*k47*k14*x6*x10 + 1*k47*k36*x9)/k47),
  Eq(Derivative(x7, t), (1*k47*k11*x5*x6 + (-1)*k47*k12*x7)/k47),
  Eq(Derivative(x8, t), (1*k47*k12*x7 + (-1)*k47*k13*x8 + 1*k47*k14*x6*x10)/k47),
  Eq(Derivative(x9, t), (1*k47*k13*x8 + (-1)*k47*k36*x9)/k47),
  Eq(Derivative(x10, t), (1*k47*k13*x8 + (-1)*k47*k14*x6*x10 + (-1)*k47*k38*x10 + 1*k47*k17*x15 + (-1)*k47*k18*x10*x13)/k47),
  Eq(Derivative(x11, t), (1*k47*k38*x10 + (-1)*k47*k32*x11)/k47),
  Eq(Derivative(x12, t), 0),
  Eq(Derivative(x13, t), ((-1)*k47*k15*x5*x13 + (-1)*k47*k18*x10*x13 + (-1)*k47*(k34*x13*x17 + k37*x13*x11) + 1*k47*(k35*x16 + k43*x16*x9) + 2*k47*k20*x18 + (-2)*k47*k39*x13*x19 + 1*k47*k23*x23 + (-1)*k47*k24*x13*x24)/k47),
  Eq(Derivative(x14, t), (1*k47*k15*x5*x13 + (-1)*k47*k16*x14)/k47),
  Eq(Derivative(x15, t), (1*k47*k16*x14 + (-1)*k47*k17*x15 + 1*k47*k18*x10*x13)/k47),
  Eq(Derivative(x16, t), (1*k47*k17*x15 + 1*k47*(k34*x13*x17 + k37*x13*x11) + (-1)*k47*(k35*x16 + k43*x16*x9))/k47),
  Eq(Derivative(x17, t), (1*k47*k19*x2*k46*k4*Piecewise((1 - exp((-(t - k6))/k8), And(Ge(t, k6), Le(t, k10))), (Piecewise((exp((-(t - k10))/k8), Gt(t, k10)), (0, True)), True)) + (-1)*k47*k33*x17)/k47),
  Eq(Derivative(x18, t), ((-1)*k47*k20*x18 + 1*k47*k39*x13*x19)/k47),
  Eq(Derivative(x19, t), (1*k47*k20*x18 + (-1)*k47*k39*x13*x19 + (-1)*k47*(k21*x19*x9 + k44*x19*x16) + 1*k47*k28*x20)/k47),
  Eq(Derivative(x20, t), (1*k47*(k21*x19*x9 + k44*x19*x16) + (-1)*k47*k28*x20)/k47),
  Eq(Derivative(x21, t), 0),
  Eq(Derivative(x22, t), (1*k47*k22*x20 + (-1)*k47*k29*x22)/k47),
  Eq(Derivative(x23, t), ((-1)*k47*k23*x23 + 1*k47*k24*x13*x24)/k47),
  Eq(Derivative(x24, t), (1*k47*k23*x23 + (-1)*k47*k24*x13*x24 + (-1)*k47*k25*x24*x16 + (-1)*k47*k42*x24*x9 + 1*k47*k30*x25)/k47),
  Eq(Derivative(x25, t), (1*k47*k25*x24*x16 + (-1)*k47*k30*x25)/k47),
  Eq(Derivative(x26, t), (1*k47*k26*x25 + (-1)*k47*k31*x26)/k47) ]