You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[(4S)-4,6,9-trimethyl-8-(4-methylphenyl)-5-methylsulfanyl-4H-thieno[2,3-c]quinolin-7-yl]acetic acid into molecular formula.
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C24H25NO2S2
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