You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (7R,8aS)-7-[[4-(trifluoromethyl)phenyl]methoxy]-2-[3-(trifluoromethyl)phenyl]sulfonyl-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazine ?
user
C22H22F6N2O3S
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