You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule ethyl 1-[4-(2-acetyl-5-fluoro-6-methoxy-2-methyl-3H-indol-1-yl)phenyl]piperidine-4-carboxylate ?
user
C26H31FN2O4
assistant