Y add -0.8160000000000001 add mul 8.89 div add mul -0.5640000000000001 exp sub mul -4.7700000000000005 mul x_4 x_3 mul 0.99 x_1 mul 0.577 x_2 add add mul -0.673 x_3 mul -0.543 x_1 sub mul 0.777 x_4 mul 0.202 x_0 mul -6.97 x_4