You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7R)-5-methyl-7-(2-methylpyrazol-3-yl)-2-methylsulfanyl-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H15N7OS
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