You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(4R)-2,2-dimethyl-3,4-dihydrochromen-4-yl]-1-propanoyl-2,3-dihydroindole-5-sulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C22H26N2O4S
assistant