You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[1-methyl-5-[4-[(4-methylphenyl)carbamoylamino]phenyl]-3-oxo-1H-isoindol-2-yl]butanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H29N3O4
assistant