You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(1,1,4,8b-tetramethyl-2-oxo-3-phenylmethoxy-3aH-pyrrolo[2,3-b]indol-5-yl)-2-methyl-N-phenylmethoxypropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C32H37N3O4
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