You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3R)-3-imidazol-1-ylpiperidin-1-yl]-(2-pyrazin-2-yl-1,3-thiazol-5-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H16N6OS
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