You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-methyl-2-propylsulfanyl-7-pyridin-2-yl-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
C15H18N6OS
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