You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-4-(1-acetylspiro[2H-indole-3,4'-piperidine]-2-yl)-2-(3,4-dichlorophenyl)butyl]-4-fluoro-N,3,5-trimethylbenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H38Cl2FN3O2
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