You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-4,8-bis(4-methylbenzoyl)-N-[[(2S)-oxolan-2-yl]methyl]-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C29H35N3O5
assistant