You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named S-[[1-[2-[6-(difluoromethyl)imidazo[1,2-a]pyrazin-3-yl]pyrimidin-4-yl]piperidin-3-yl]amino]thiohydroxylamine by IUPAC nomenclature, provide its molecular formula.
user
C16H18F2N8S
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