"\u03B2,\u03B2-Caroten-4-one; Myxoxanthine" . . "Echinenone" . . . . . . "Echinenone" . . . . "echinenone" . "2,4,4-Trimethyl-3-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethylcyclohex-1-en-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl]cyclohex-2-en-1-one" . . . . . . . .