Y add 68.60000000000001 sub mul 0.51 mul div sub mul -3.99 x_1 mul 0.07 mul log add 0.34500000000000003 mul 0.125 x_4 sub mul -0.737 x_2 mul -0.5700000000000001 x_4 x_3 x_2 add mul 0.256 x_0 mul -33.4 x_3