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-[[3-cyano-4-(4-methylphenyl)-5-oxo-4,6,7,8-tetrahydro-1H-quinolin-2-yl]sulfanyl]-N-(2-ethylphenyl)acetamide into molecular formula.
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C27H27N3O2S
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