BENZOTHIAZOLIUM, 2-[[3-[(3-ETHYL-2(3H)-BENZOTHIAZOLYLIDENE)METHYL]-2-CYCLOHEXEN-1-YLIDENE]METHYL]-3-(3-SULFOPROPYL)-, INNER SALT

3-(2-[(3-([3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]METHYL)-2-CYCLOHEXEN-1-YLIDENE)METHYL]-1,3-BENZOTHIAZOL-3-IUM-3-YL)-1-PROPANESULFONATE