You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,3-dihydro-1H-inden-1-yl)-1-[4-[(2-methoxyphenyl)methyl]piperidin-1-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H29NO2
assistant