You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 3-[3-[(6-tert-butyl-9-pyridin-2-yl-1H-carbazol-1-id-2-yl)oxy]benzene-2-id-1-yl]-1-(2,6-diphenylphenyl)benzo[e]benzimidazole-1,3-diium;platinum(2+) ?
user
C56H40N4OPt+2
assistant