[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=Branch2][Ring1][S][=C][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring1][=Branch1][C][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][C][C][C][Branch1][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a pyrrolidinone that is 1,5-dimethylpyrrolidine-2,4-dione substituted by a 1-hydroxy-13-methyltetradecylidene moiety at position 3. Isolated from the marine sponge Melophlus sarasinorum and other species of genus Melophlus, it exhibits cytotoxicity against murine leukemia cell line. It has a role as a metabolite and an antineoplastic agent. It is an enol, a lactam and a member of pyrrolidin-2-ones."}]