Y add -0.834 sub mul -81.10000000000001 x_2 sub mul -42.5 mul mul add sub add add mul -90.30000000000001 x_4 mul 0.8180000000000001 x_2 mul 59.5 x_1 mul -0.444 log add 67.10000000000001 mul 0.668 x_0 mul -0.861 x_4 pow2 add -4.8500000000000005 mul 0.499 x_3 x_3 mul 0.8250000000000001 x_1