You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R)-2-(2-methylpropyl)-N-(4-methylpyridin-2-yl)-1-oxospiro[4H-isoquinoline-3,1'-cyclopentane]-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H29N3O2
assistant