You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[(5,6-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl)sulfanyl]ethyl]-N-propan-2-ylpropan-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H25N5S
assistant