You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R)-N-(2,3-dimethylphenyl)-4-(2-methoxynaphthalen-1-yl)-6-methyl-2-sulfanylidene-3,4-dihydro-1H-pyrimidine-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H25N3O2S
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