You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-pyrrolidin-1-ylsulfonyl-4-(2,4,6-trimethylphenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H30N2O2S
assistant