You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(2-methylimidazo[2,1-b][1,3,4]thiadiazol-6-yl)methyl]pyrido[4,3-d]pyrimidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C13H10N6OS
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