You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-methylpropanoyl)-N-[2-(2-methyl-1,3-thiazol-4-yl)ethyl]piperidine-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25N3O2S
assistant