[{"from": "human", "value": "Describe this molecule. [C][N+1][Branch1][C][C][Branch2][Branch1][Ring1][C][C][N][C][=C][C][=Branch2][Ring1][Ring1][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][C][N+1][Branch1][C][C][Branch1][C][C][O-1][C][=Branch1][C][=O][C][=C][Branch1][#C][C][=C][C][=Branch1][=Branch2][=C][Ring1][=Branch1][C][Ring2][Ring1][Branch1][=O][O][O][O-1]"}, {"from": "gpt", "value": "The molecule is a highly selective bioreductive drug that is activated in, and is preferentially toxic to, hypoxic cells in tumours. It has been shown to work synergistically with fractionated radiation to significantly delay growth of tumours compared to administration of either banoxantrone or radiation alone. Banoxantrone was also efficacious in tumour models when administered in combination with either cisplatin or chemoradiation."}]