You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydrochromen-2-yl)-[4-(4-methoxyphenyl)piperazin-1-yl]methanethione into molecular formula.
user
C25H32N2O3S
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