BENZOTHIAZOLIUM, 3-ETHYL-2-[2-[3-[(3-ETHYL-2(3H)-BENZOTHIAZOLYLIDENE)ETHYLIDENE]-2-(3-HYDROXY-1-OXO-1H-INDEN-2-YL)-1-CYCLOPENTEN-1-YL]ETHENYL]-, INNER SALT

2-(2-[(E)-2-(3-ETHYL-1,3-BENZOTHIAZOL-3-IUM-2-YL)ETHENYL]-5-((E)-2-[3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]ETHYLIDENE)-1-CYCLOPENTEN-1-YL)-1-OXO-1H-INDEN-3-OLATE