N'-methyl-N-(1,2,3,4-tetrahydroacridin-9-yl)-N'-[3-(1,2,3,4-tetrahydroacridin-9-ylamino)propyl]propane-1,3-diamine
3-[methyl-[3-(1,2,3,4-tetrahydroacridin-9-ylamino)propyl]amino]propyl-(1,2,3,4-tetrahydroacridin-9-yl)amine