You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-4-yl]methyl]-6-azaspiro[2.5]octane-2-carboxamide;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H21ClF3N3OS
assistant