You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(2,3-dihydro-1-benzofuran-5-ylmethyl)piperazin-1-yl]-(5-morpholin-4-yl-4-phenylthiophen-2-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H31N3O3S
assistant