You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3-azaspiro[5.5]undecan-3-yl)-2-[2-(1H-1,2,4-triazol-5-yl)-1,3-thiazol-4-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H23N5OS
assistant