8-(2-Chloro-3-[(10,11-dihydro-9H-benzo[a]xanthen-8-yl)-methylene)-1-cyclohexen-1-yl]-methylene]-8,9,10,11-tetrahydro-benzo[a]xanthenylium perchlorate

8-(2-chloro-3-[(10,11-dihydro-9h-benzo[a]xanthen-8-yl)-methylene)-1-cyclohexen-1-yl]-methylene]-8,9,10,11-tetrahydro-benzo[a]xanthenylium perchlorate ; 8-(2-chloro-3-[(10,11-dihydro-9h-benzo[a]xanthen-8-yl)-methylene)-1-cyclohexen-1-yl]-methylene]-8,9,10,11-tetrahydro-ben ; 8-[(2-chloro-3-[(10,11-dihydro-9h-benzo[a]xanthen-8-ylmethylene)-1-cyclohexen-1-yl]-methylene])-8,9,10,11-tetrahydro-benzo[a]xanthenylium perchlorate