You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[4-(ethylsulfonylmethylamino)-2,2-dimethyl-3,4-dihydrochromen-6-yl]oxymethyl]benzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H27NO6S
assistant