You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-[(5S)-7-[(3-methylphenyl)methyl]-2,7-diazaspiro[4.5]decan-2-yl]-N-propan-2-ylpropanamide into its molecular formula.
user
C22H35N3O
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