[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][Ring1][O][=O]"}, {"from": "gpt", "value": "The molecule is a member of the class of phenanthridines that is phenanthridine with an oxo substituent at position 6. A poly(ADP-ribose) polymerase (PARP) inhibitor, it has been shown to exhibit immunosuppressive activity. It has a role as a mutagen, an immunosuppressive agent and an EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor. It is a lactam and a member of phenanthridines."}]