You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(benzenesulfonyl)-N-[2-[(4-phenoxyphenyl)methyl]-1H-benzimidazol-1-ium-5-yl]thiophene-2-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H24N3O5S3+
assistant