You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-amino-5-methyl-N-[3-(trifluoromethyl)phenyl]thieno[2,3-b]pyridine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C16H12F3N3OS
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