You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2-pyrazin-2-yl-1,3-thiazol-5-yl)-[(2R)-2-(pyrazol-1-ylmethyl)pyrrolidin-1-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H16N6OS
assistant