[ Diff(x[1], t) = ((-1)*k[14]*piecewise(k[13] = 1, k[1]/(111/10), k[1]/(41/5))*x[7]*x[1] + 1*k[14]*k[1]*x[2] + 1*k[14]*k[7]*x[2] + (-1)*k[14]*k[5]*x[1] + 1*k[14]*k[6])/k[14],
  Diff(x[2], t) = (1*k[14]*piecewise(k[13] = 1, k[1]/(111/10), k[1]/(41/5))*x[7]*x[1] + (-1)*k[14]*k[1]*x[2] + (-1)*k[14]*k[8]*x[2])/k[14],
  Diff(x[3], t) = (1*k[14]*k[5]*x[1] + (-1)*k[14]*piecewise(k[13] = 1, piecewise(k[13] = 1, k[1]*8, k[1]*5)/1000, piecewise(k[13] = 1, k[1]*8, k[1]*5)/3000)*x[5]*x[3] + 1*k[14]*piecewise(k[13] = 1, k[1]*8, k[1]*5)*x[4] + (-1)*k[14]*k[10]*x[3])/k[14],
  Diff(x[4], t) = (1*k[14]*k[8]*x[2] + 1*k[14]*piecewise(k[13] = 1, piecewise(k[13] = 1, k[1]*8, k[1]*5)/1000, piecewise(k[13] = 1, k[1]*8, k[1]*5)/3000)*x[5]*x[3] + (-1)*k[14]*piecewise(k[13] = 1, k[1]*8, k[1]*5)*x[4] + (-1)*k[14]*k[10]*x[4])/k[14],
  Diff(x[5], t) = ((-1)*k[14]*(piecewise(k[13] = 1, k[1]/(111/10), k[1]/(41/5))*x[5]*x[3] - piecewise(k[13] = 1, k[1]*8, k[1]*5)*x[4])/(k[11]*k[12]) + (-1)*k[14]*k[9]*x[5])/k[14],
  Diff(x[6], t) = 1*k[14]*k[10]*x[4]/k[14],
  Diff(x[7], t) = (-1)*k[14]*(piecewise(k[13] = 1, k[1]/(111/10), k[1]/(41/5))*x[7]*x[1] - k[1]*x[2] - k[9]*x[5]*k[11]*k[12])*x[8]/k[12]/k[14],
  Diff(x[8], t) = piecewise(600*x[2]/(250 + x[2]) - 200 > 0, (600*x[2]/(250 + x[2]) - 200)*1000, 0) ]