You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-[2-[(1E,3E,5E,7E)-7-[3-[3-(ethylaminooxysulfonyl)propyl]-1,1-dimethyl-3a,9b-dihydrobenzo[e]indol-2-ylidene]hepta-1,3,5-trienyl]-1,1-dimethyl-3a,9b-dihydrobenzo[e]indol-3-ium-3-yl]propane-1-sulfonic acid .
user
C43H54N3O6S2+
assistant