You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-phenyl-1-([1,3]thiazolo[5,4-b]pyridin-2-ylmethyl)piperidin-4-yl]methanamine;2,2,2-trifluoroacetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23F3N4O2S
assistant