You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[[(4-chlorophenyl)sulfonylamino]methyl]-2,3-dihydro-1-benzofuran-5-yl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H15ClNO5S-
assistant