Crassostreaxanthin A

(3E,5E,7E,9E,11E,13E,15E)-1-[(2S,3R,5R)-2,3-Dimethyl-5-(2-oxopropyl)tetrahydro-2-furanyl]-18-[(4R)-4-hydroxy-2,6,6-trimethyl-1-cyclohexen-1-yl]-3,7,12,16-tetramethyl-3,5,7,9,11,13,15-octadecaheptaen-1 7-in-2-on

(3E,5E,7E,9E,11E,13E,15E)-1-[(2S,3R,5R)-2,3-Dimethyl-5-(2-oxopropyl)tetrahydro-2-furanyl]-18-[(4R)-4-hydroxy-2,6,6-trimethyl-1-cyclohexen-1-yl]-3,7,12,16-tetramethyl-3,5,7,9,11,13,15-octadecaheptaen-1 7-yn-2-one

(3E,5E,7E,9E,11E,13E,15E)-1-[(2S,3R,5R)-2,3-Diméthyl-5-(2-oxopropyl)tétrahydro-2-furanyl]-18-[(4R)-4-hydroxy-2,6,6-triméthyl-1-cyclohexén-1-yl]-3,7,12,16-tétraméthyl-3,5,7,9,11,13,15-octadécaheptaén-1 7-yn-2-one

3,5,7,9,11,13,15-Octadecaheptaen-17-yn-2-one, 18-[(4R)-4-hydroxy-2,6,6-trimethyl-1-cyclohexen-1-yl]-3,7,12,16-tetramethyl-1-[(2S,3R,5R)-tetrahydro-2,3-dimethyl-5-(2-oxopropyl)-2-furanyl]-, (3E,5E,7E,9 E,11E,13E,15E)-

Crassostreaxanthin A

(3R,3′R,5′R,6′S)-3′,6′-Epoxy-3-hydroxy-6′-methyl-7,8-didehydro-1′,2′,5′,6′,7′,8′-hexahydro-16′-nor-β,ψ-carotene-1′,8′-dione