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 4-chloro-3-[(Z)-(3-ethoxycarbonyl-4-methyl-1,5-dihydro-1,5-benzodiazepin-2-ylidene)amino]sulfonylbenzoic acid .
user
C20H18ClN3O6S
assistant