You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[4-[(2R)-2-(4-chlorophenyl)-2-[(3-methylphenyl)methoxy]ethyl]piperazin-1-yl]-3-methylbut-2-en-1-one into molecular formula.
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C25H31ClN2O2
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