You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named benzyl (2S,3aR,4S)-4-hydroxy-2-methyl-4-[[(1S,4R)-1-methyl-3,6-dioxo-2,4-dihydro-1H-pyrazino[2,1-b]quinazolin-4-yl]methyl]-1-oxo-2,3a-dihydroimidazo[1,2-a]indole-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C32H29N5O6
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