You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 5-[(3-carboxy-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene)-(3-sulfophenyl)methyl]-2-hydroxy-3-methylbenzoic acid using the IUPAC nomenclature.
user
C23H18O9S
assistant