You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,2R)-1'-[1-(1,2-dihydroacenaphthylen-1-yl)piperidin-4-yl]-N-methyl-2'-oxospiro[cyclopropane-2,3'-indole]-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C29H29N3O2
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