You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R)-3-[(2-ethyl-1,3-thiazol-5-yl)methyl-methylamino]-1-(1-methylpyrazol-4-yl)piperidin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H23N5OS
assistant