"\u03B2-Carotene-4,4'-dione, 3,3'-dihydroxy-, all-trans-; (3S,3'S)-Astaxanthin; (3S,3'S)-Astaxanthin; (3S,3'S)-all-trans-Astaxanthin; (S,S)-Astaxanthin; Astaxanthin, all-trans-; all-trans-Astaxanthin; trans-Astaxanthin" . . . . "Astaxanthin" . . . "astaxanthin" . . . . . . . . . . "Astaxanthin" . . . . . "(3S,3S)-3,3-Dihydroxy-\u03B2,\u03B2-carotene-4,4-dione" . . . . . . . . "(6S,6S)-3,3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-Tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaene-1,18-diyl]bis(6-hydroxy-2,4,4-trimethylcyclohex-2-en-1-one)" .