You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1-benzofuran-2-yl)-N-(5-ethyl-6,7-dihydro-4H-[1,3]thiazolo[5,4-c]pyridin-2-yl)prop-2-enamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H19N3O2S
assistant