Bisanhydrobacterioruberin

3'',3'''-Dideoxy-2'',3'':2''',3'''-tetradehydrobacterioruberin

(2S,2'S)-3,3',4,4'-Tetradehydro-1,1',2,2'-tetrahydro-2,2'-bis(3-methyl-2-butenyl)-ψ,ψ-carotene-1,1'-diol