[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][Branch1][P][C][Branch1][#Branch2][C][C@@H1][Branch1][Branch1][C][Ring1][=Branch1][=O][O][Branch1][C][C][C][/C][=C][/C][=Branch2][Ring2][P][=C][/C][=C][/C][=Branch2][Ring2][=Branch2][=C][/C][=C][/C][=C][Branch2][Ring1][S][/C][=C][/C][=C][Branch2][Ring1][Branch2][/C][=C][/C][=C][Branch1][P][C][=Branch1][C][=O][C@H1][Branch1][=Branch2][C][C][Ring1][#Branch1][Branch1][C][C][C][O][C][\\C][\\C][/C][/C]"}, {"from": "gpt", "value": "The molecule is a keto-carotenoid in the terpenes class of chemical compounds. It is classified as a xanthophyll but it is a carotenoid with no vitamin A activity. It is found in the majority of aquatic organisms with red pigment. Astaxanthin has shown to mediate anti-oxidant and anti-inflammatory actions. It may be found in fish feed or some animal food as a color additive."}]