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 (2Z)-2-[(2Z,4E)-5-[1,1-dimethyl-6,8-disulfo-3-(3-sulfopropyl)benzo[e]indol-3-ium-2-yl]-3-[4-[3-(2-methylprop-2-enoylamino)propylcarbamoyl]phenyl]penta-2,4-dienylidene]-1,1-dimethyl-3-(3-sulfopropyl)benzo[e]indole-6,8-disulfonic acid .
user
C53H59N4O20S6+
assistant