You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-methoxyphenyl)-N-methyl-1-(4-methylphenyl)-N-(1-methylpiperidin-4-yl)-6-oxopiperidine-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H35N3O3
assistant