You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [2-(3,4-dihydro-2H-chromen-4-ylamino)-2-oxoethyl] 3-(prop-2-ynylsulfamoyl)benzoate .
user
C21H20N2O6S
assistant