You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[[(4R,9aR)-4-benzhydryl-2-[[2-methoxy-5-[5-(trifluoromethyl)tetrazol-1-yl]phenyl]methyl]-3,4,6,7,9,9a-hexahydro-1H-pyrazino[1,2-a]pyrazin-8-yl]sulfonyl]ethyl acetate by IUPAC nomenclature, provide its molecular formula.
user
C34H38F3N7O5S
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