You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3aS,6aR)-2-[4-(ethylsulfamoyl)benzoyl]-1,3,4,5,6,6a-hexahydrocyclopenta[c]pyrrole-3a-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H22N2O5S
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