You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-ethyl-6-[1-(trifluoromethylsulfonyl)-3,6-dihydro-2H-pyridin-4-yl]imidazo[1,2-a]pyridin-3-yl]-N-methyl-1,3-thiazol-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H20F3N5O2S2
assistant