[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch2][Ring2][=Branch2][=C][C][=Branch1][C][=O][N][C][C][Branch2][Ring1][=N][C][=C][C][=Branch1][C][=O][C][=N][C][=C][C][=C][Ring1][=Branch1][C][Ring1][O][=N][C][=C][C][=C][C][=C][Ring1][#Branch2][Ring1][=Branch1][O][C]"}, {"from": "gpt", "value": "The molecule is an alkaloid that is an enamide obtained by the formal condensation of 3-methylbut-2-enoic acid with 6-(2-amino-1-hydroxyethyl)-4H-pyrido[2,3,4-kl]acridin-4-one. It is isolated from the Okinawan marine tunicate Cystodytes dellechiajei and exhibits cytotoxicity against human epidermoid carcinoma KB cells. It has a role as a metabolite and an antineoplastic agent. It is an alkaloid, an organic heterotetracyclic compound, an enamide, a secondary alcohol, an enone and a secondary carboxamide. It is functionally related to a 3-methylbut-2-enoic acid."}]