You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7S)-2-amino-7-[5-(6-methoxypyrazin-2-yl)-4,5-dihydro-1,3-thiazol-4-yl]-4-methyl-7,8-dihydro-6H-pyrido[4,3-d]pyrimidin-5-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H17N7O2S
assistant