You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3aR,4S,9bS)-N-(2-methoxyphenyl)-4-(4-nitrophenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-sulfonamide by IUPAC nomenclature, provide its molecular formula.
user
C25H23N3O5S
assistant