You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [4-[(5-amino-2,4,6,7-tetramethyl-3H-1-benzofuran-2-yl)methyl]piperazin-1-yl]-(3-methoxyphenyl)methanone by IUPAC nomenclature, provide its molecular formula.
user
C25H33N3O3
assistant