[{"from": "human", "value": "Please give me some details about this molecule. [C][C@@][Branch2][Ring1][Ring2][C][C@][Branch1][#C][C@@H1][Branch1][Ring2][O][Ring1][Branch1][C][C][=Branch1][C][=O][O][Ring1][#Branch1][C][C][C][C][C][C][C][C][C][/C][=C][/C][=C][/C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is an organic heterobicyclic compound consisting of a gamma-lactone ring fused onto a substituted tetrahydrofuran ring. It is isolated from the Australian marine sponge Plakinastrella clathrata. It has a role as a metabolite. It is a gamma-lactone and an organic heterobicyclic compound."}]