BENZOXAZOLIUM, 2,2-[1,3-PROPANEDIYLBIS[(DIMETHYLIMINIO)-3,1-PROPANEDIYL-1(4H)-PYRIDINYL-4-YLIDENE-1-PROPEN-1-YL-3-YLIDENE]]BIS[3-METHYL-, TETRAIODIDE [ 154757-99-0 ]