Y add -7.87 mul mul add add sub mul 0.66 exp add 4.13 mul -49.5 x_4 mul -0.624 pow2 add -69.7 mul -31.200000000000003 x_0 mul -4.2700000000000005 pow2 add 17.400000000000002 mul 0.482 x_2 mul -68.0 x_3 x_3 x_1