3H-Indolium,5,6-dichloro-2-[[2-chloro-3-[3-[2-chloro-3-[[5,6-dichloro-1,3-dihydro-1-(methoxymethyl)-3,3-dimethyl-2H-indol-2-ylidene]methyl]-2-cyclopenten-1-ylidene]-1-propenyl]-2-cyclopenten-1-ylidene]methyl]-1-(methoxymethyl)-3,3-dimethyl-, perchlorate