[{"from": "human", "value": "Describe this molecule. [C][C][=C][C][=Branch2][Ring2][=C][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][C][/C][=C][Branch1][C][\\C][/C][C][=Branch1][C][=O][/C][=C][Branch1][C][/C][\\C][C][C][C][Branch1][C][C][C][=Branch1][C][=O][C][Branch1][#Branch1][C][=C][Branch1][C][C][C][O][O][C]"}, {"from": "gpt", "value": "The molecule is a meroterpenoid that is hexadeca-2,6,14-triene-5,12-dione substituted by a hydroxy group at position 13, a 2-hydroxy-5-methoxy-3-methylphenyl group at position 1 and methyl groups at positions 3, 7, 11 and 15. Isolated from Halidrys siliquosa, it exhibits antibacterial and antifouling activities. It has a role as a metabolite, an antifouling biocide and an antibacterial agent. It is a meroterpenoid, a member of phenols, an aromatic ether, an enone, a secondary alcohol and a secondary alpha-hydroxy ketone."}]