You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[5-[3,3-dimethyl-1-(3-sulfopropyl)indol-1-ium-2-yl]pentyl]-3,3-dimethyl-1-(3-sulfophenyl)-2H-indole-5-sulfonic acid by IUPAC nomenclature, provide its molecular formula.
user
C34H43N2O9S3+
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