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 5-[[(E)-2-[4-(furan-2-yl)phenyl]ethenyl]sulfonylamino]-2,3-dihydro-1H-indene-4-sulfonamide .
user
C21H20N2O5S2
assistant