You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-N-[(4-ethyl-2-methyl-1,3-thiazol-5-yl)methyl]-1-(oxan-4-yl)piperidine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H29N3O2S
assistant