You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (4R)-5-cyano-2-methyl-6-[2-oxo-2-[2-(trifluoromethyl)anilino]ethyl]sulfanyl-N-phenyl-4-thiophen-2-yl-1,4-dihydropyridine-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C27H21F3N4O2S2
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