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 (2S)-N-ethyl-4-[6-[(3-methoxyphenyl)methyl]furo[2,3-b]pyrrole-5-carbonyl]-2-methylpiperazine-1-carboxamide ?
user
C23H28N4O4
assistant