[{"from": "human", "value": "Please give me some details about this molecule. [C][C@@H1][C@@H1][Branch2][#Branch1][Ring1][C@@H1][Branch2][=Branch1][=N][C@H1][Branch2][=Branch1][Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@H1][C@@H1][Branch1][P][O][C@@H1][Branch1][N][C@@H1][Branch1][Branch2][C@][Ring1][=Branch1][Branch1][C][C][O][O][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][Branch1][P][C][=C][C][=Branch1][O][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][Ring1][O][C][O][C][=Branch1][C][=O][C][Ring1][#C][=C][Ring2][Ring1][Ring1][O][N][O][C][O]"}, {"from": "gpt", "value": "The molecule is an heterocyclic antineoplastic antibiotic isolated from the bacterium Actinomycete strain J907-21.  Elsamitrucin intercalates into DNA at guanine-cytosine (G-C)-rich sequences and inhibits topoisomerase I and II, resulting in single-strand breaks and inhibition of DNA replication. (NCI04)"}]