4.8944034102934 + 1.2723031188849279*x2^2*x3^2*x4^4 + 1.1845621900010301*x1^2*x3^6 + 0.28148820906093597*x0^2*x2^4*x4^2 + 2.237298866287131*x0^2*x1^4*x4^2 + 0.542484141187562*x0^4*x3^2*x4^2 + 0.3353216665073548*x0^1*x1^1*x2^1*x3^1*x4^2 + 0.9042813721301197*x0^1*x1^1*x2^1*x3^3*x4^1 - 2.1890122936443834*x0^1*x1^1*x2^1*x3^1*x4^1 - 0.3902392990159973*x0^1*x1^1*x2^1*x3^2*x4^1