[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][=Branch1][=Branch1][=C][N][=N][Ring1][=Branch1][N][=C][Branch1][Ring2][N][Ring1][Branch2][N]"}, {"from": "gpt", "value": "The molecule is a organonitrogen heterocyclic compound that is 1H-imidazo[4,5-d]pyridazine substituted by an amino group at position 2. A guanidine alkaloid isolated from Anchinoe paupertas, it exhibits cytotoxic activity against human and murine tumor cell lines. It has a role as a metabolite and an antineoplastic agent. It is a member of guanidines, an alkaloid and an organonitrogen heterocyclic compound."}]