You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1S,9aR,11aS)-9a,11a-dimethyl-1-(piperidine-1-carbonyl)-1,2,3,3a,3b,4,5,8,9,9b,10,11-dodecahydrocyclopenta[i]phenanthridin-7-one into its molecular formula.
user
C24H36N2O2
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