You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-[3-(5-chloro-7-methoxy-1-benzofuran-2-carbonyl)-4-hydroxy-5-oxo-2-thiophen-2-yl-2H-pyrrol-1-yl]piperidine-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H25ClN2O7S
assistant