You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(1-ethyl-3,6-dihydro-2H-pyridin-4-yl)-3-methyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C11H15N5S
assistant