3H-Indolium, 2-[3-[1,3-dihydro-1-(3-hydroxypropyl)-3,3-dimethyl-2H-indol-2-ylidene]-1-propen-1-yl]-1-(3-hydroxypropyl)-3,3-dimethyl-
3H-Indolium, 2-[3-[1,3-dihydro-1-(3-hydroxypropyl)-3,3-dimethyl-2H-indol-2-ylidene]-1-propen-1-yl]-1-(3-hydroxypropyl)-3,3-dimethyl-