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 (3R)-3-[2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-2-oxoethyl]-4-[(4-methoxy-2,3-dimethylphenyl)methyl]piperazin-2-one ?
user
C23H29N3O3S
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