3-Butyl-2-[5-(3-butyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)-3-chloro-1,3-pentadien-1-yl]-1,1-dimethyl-1H-benz[e]indolium hexafluorophosphate (1:1) [ 354540-12-8 ]