You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(4-methylphenyl)-4-(4-methylphenyl)sulfonyl-2-[(E)-2-phenylethenyl]-1,3-oxazol-5-amine by IUPAC nomenclature, provide its molecular formula.
user
C25H22N2O3S
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