[ Diff(x[1], t) = ((-1)*x[5]*x[1]^2/(x[1]^2 + k[6]^2) + 1*(1 - k[18])*(k[7] + (1 - x[3])*k[1]*x[2]^2/(x[2]^2 + k[9]^2)*x[1]^2/(x[1]^2 + k[13]^2))*x[9] + 1*x[6]*(k[10] + k[11]^8/(x[9]^8 + k[11]^8)) + (-1)*x[4]*x[1]^2/(x[1]^2 + k[14]^2) + (-1)*k[21]*x[1]^4/(x[1]^4 + k[19]^4) + 1*k[20]*x[8]/(x[8] + 1/100))/k[23],
  Diff(x[2], t) = (1*k[8]*x[1] + (-1)*k[3]*x[2])/k[23],
  Diff(x[3], t) = (1*k[4]*x[1]^4/(x[1]^4 + k[16]^4)*(1 - x[3]) + (-1)*k[5]*x[3])/k[23],
  Diff(x[4], t) = (1*k[22]*k[17]*k[15]*x[1]^4/((k[22] - 1)*(1/20)^4 + x[1]^4) + (-1)*x[4]*k[17])/k[23],
  Diff(x[5], t) = (1*1/k[22]*k[2]*k[17]*((k[22] - 1)*2^4 + x[9]^4)/x[9]^4 + (-1)*x[5]*k[17])/k[23],
  Diff(x[6], t) = (1*1/(k[22]*k[22])*k[12]*k[17]*((k[22] - 1)*2^2 + x[9]^2)/x[9]^2*((k[22] - 1)*(1/20)^2 + x[1]^2)/x[1]^2 + (-1)*x[6]*k[17])/k[23],
  Diff(x[7], t) = 0/k[24],
  Diff(x[8], t) = (1*k[21]*x[1]^4/(x[1]^4 + k[19]^4) + 1*k[18]*(k[7] + (1 - x[3])*k[1]*x[2]^2/(x[2]^2 + k[9]^2)*x[1]^2/(x[1]^2 + k[13]^2))*x[9] + (-1)*k[20]*x[8]/(x[8] + 1/100))/k[25],
  Diff(x[9], t) = (1*x[5]*x[1]^2/(x[1]^2 + k[6]^2) + (-1)*(1 - k[18])*(k[7] + (1 - x[3])*k[1]*x[2]^2/(x[2]^2 + k[9]^2)*x[1]^2/(x[1]^2 + k[13]^2))*x[9] + (-1)*k[18]*(k[7] + (1 - x[3])*k[1]*x[2]^2/(x[2]^2 + k[9]^2)*x[1]^2/(x[1]^2 + k[13]^2))*x[9])/k[26] ]