Y add 0.85 add mul 2.45 div x_4 x_1 mul -0.8310000000000001 mul div abs add 6.13 mul -0.876 x_4 pow3 add 7.33 mul -3.61 x_3 exp sub sub mul 0.8310000000000001 x_2 mul -67.8 x_0 mul -0.215 abs add -81.30000000000001 mul 0.73 x_1