VIOLERYTHRIN

2,2'-Dinor-β,β-carotene-3,3',4,4'-tetrone

4,4'-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-Tetramethyl-1,3,5,7,9,11,13,15,17-octadecanonene-1,18-diyl]bis(3,5,5-trimethyl-3-cyclopentene-1,2-dione)