3,3',4,4'-Tetradehydro-1,1',2,2'-tetrahydro-1,1'-dimethoxy-2,2'-dioxo-ψ,ψ-carotene;all-trans-3,3',4,4'-Tetradehydro-1,1',2,2'-tetrahydro-1,1'-dimethoxy-2,2'-dioxolycopene;Diketo-2,2'-spirilloxanthine;P-518;PE-518
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