[{"from": "human", "value": "Provide a description of this molecule. [C][=C][Branch2][Ring2][=N][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][O][O][C][=C][Branch2][Ring1][=N][C][=C][Branch2][Ring1][#Branch1][C][=C][Ring1][=Branch1][O][C][=C][Branch1][=N][C][=C][Branch1][Branch2][C][=C][Ring1][=Branch1][O][Ring1][#Branch2][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a phlorotannin that is oxanthrene-1,3,6,8-tetrol substituted by a 3,5-dihydroxyphenoxy moiety at position 4. Isolated from the marine brown alga, Ecklonia cava, it exhibits antioxidant activity. It has a role as a metabolite and an antioxidant. It is functionally related to a phloroglucinol."}]