[{"from": "human", "value": "Provide a description of this molecule. [C][C@H1][C@@][Branch2][=Branch1][C][C][=Branch1][C][=O][O][C@][Branch2][Branch1][Branch2][C@@H1][Branch2][Branch1][Ring1][C][=C][Branch2][Ring2][=N][C@][Branch2][Ring1][O][C][C][C@][Ring1][=Branch1][Branch2][Ring1][C][C@@][Ring1][=N][Branch1][Branch1][C][Ring1][#Branch2][=C][C][=Branch1][C][=O][O][Ring2][Ring1][Ring1][C][C][=C][C][=Branch1][C][=O][O][C][Ring1][P][Branch1][C][C][C][C][O][C][O]"}, {"from": "gpt", "value": "The molecule is a meroterpenoid produced by Aspergillus nidulans. It has a pentacyclic structure which incorporates three lactone functionalities and a spiro union."}]