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 [(4R)-4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-[1-(4-methylphenyl)sulfonylpiperidin-4-yl]methanone ?
user
C22H28N2O3S2
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