You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(6-methoxy-1-benzofuran-3-yl)-N-[4-(4-methylpiperidin-1-yl)sulfonylphenyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H26N2O5S
assistant