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Mul Pow Mul 2 sqrt Mul Mul x2 Add -4 Add Pow Pow x3 2 Mul cot x5 x6 Mul -2 Pow x5 pi x0 -1 Mul x2 Add -4 Add Pow Pow x3 2 Mul cot x5 x6 Mul -2 Pow x5 pi 