You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[3-(3,4-dihydro-2H-pyrrol-5-ylsulfamoyl)phenyl]sulfamoyl]-5-methylfuran-2-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H17N3O7S2
assistant