You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 5-(4-hydroxy-6-methoxy-7-methyl-2,3-dihydrochromen-4-yl)-N,N-dimethyl-1H-imidazole-2-sulfonamide ?
user
C16H21N3O5S
assistant