You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[2-(2-ethyl-4-methylpyrimidin-5-yl)-1,3-thiazol-4-yl]-N-(1,4,5,6-tetrahydropyrimidin-2-yl)-1,3-thiazol-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H19N7S2
assistant