You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3R,4S)-3-[(5-chlorothiophene-2-carbonyl)amino]-4-[[4-(2-oxopyridin-1-yl)benzoyl]amino]pyrrolidine-1-carboxamide .
user
C22H20ClN5O4S
assistant