[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C@@][Branch2][Ring2][=N][C][=C][Branch1][#Branch1][C][O][C][Ring1][=Branch1][=O][C][=Branch1][C][=O][N][C][C][=C][C][=C][Branch1][N][C][=C][C][=C][Ring1][=Branch1][N+1][=Branch1][C][=O][O-1][N][=C][Ring1][=N][C][Ring1][S][=C][Ring2][Ring1][=Branch2][O]"}, {"from": "gpt", "value": "The molecule is a pyranoindolizinoquinoline that is camptothecin in which the hydrogen at position 9 has been replaced by a nitro group. It is a prodrug for 9-aminocamptothecin. It has a role as an antineoplastic agent, an EC 5.99.1.2 (DNA topoisomerase) inhibitor and a prodrug. It is a pyranoindolizinoquinoline, a C-nitro compound, a semisynthetic derivative, a tertiary alcohol and a delta-lactone."}]