You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E)-2-[(2Z,4E)-5-[1,1-dimethyl-6,8-disulfo-3-(3-sulfopropyl)benzo[e]indol-3-ium-2-yl]-3-[5-(2,5-dioxopyrrolidin-1-yl)oxycarbonylpyridin-2-yl]penta-2,4-dienylidene]-1,1-dimethyl-3-(3-sulfopropyl)benzo[e]indole-6,8-disulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C49H49N4O22S6+
assistant