You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-methyl-5-[4-(naphthalen-1-ylmethyl)piperazine-1-carbonyl]phenyl]furan-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C28H27N3O3
assistant