for the following products
3-Ethyl-2-((3-ethyl-5-(2-(1-ethylquinolin-4(1H)-ylidene)ethylidene)-4-oxothiazolidin-2-ylidene)methyl)-4,5-diphenylthiazol-3-ium bromide | 3-Ethyl-2-(3-ethyl-4,5-diphenyl-thiazolium-2-yl-methylene)-5-[2-(1-ethyl-1H-quinolin-4-ylidene)-ethylidene]-thiazolidin- | 3-Ethyl-2-(3-ethyl-4,5-diphenyl-thiazolium-2-yl-methylene)-5-[2-(1-ethyl-1H-quinolin-4-ylidene)-ethylidene]-thiazolidin-4-one bromide and 4,5-Diphenyl-3-ethyl-2-{3-ethyl-5-[2-(1-ethyl-4-quinolinylidene)ethylidene]-4-oxo-2-thiazolidinylidene}methylthiazolium bromide
