You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-[3-[3-(1,3-benzoxazol-2-yl)piperidin-1-yl]sulfonylphenyl]ethanone is given. What is its corresponding molecular formula?
user
C20H20N2O4S
assistant