You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[6-(1-benzofuran-2-yl)pyridin-3-yl]-4-chloro-5-methyl-1,2-thiazole-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H12ClN3O2S
assistant