You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 6-(3,4-difluorophenyl)sulfonyl-1,2,3,4,4a,5,7,7a-octahydropyrrolo[3,4-b]pyridine ?
user
C13H16F2N2O2S
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