[{"from": "human", "value": "Provide a description of this molecule. [C][/C][=C][/C][C][C][=Branch1][=N][=C][C][Branch1][Branch2][C][=Branch1][C][=O][O][Ring1][#Branch1][O][C][Branch1][Ring2][O][Ring1][O][/C][=C][/C]"}, {"from": "gpt", "value": "The molecule is a delta-lactone that is 3,5,7,7a-tetrahydro-2H-furo[3,4-b]pyran-2-one substituted by a hydroxy group at position 3 and propenyl groups at positions 5 and 7. Isolated from the fermantation broth of Myceliophthora lutea TF-0409, it exhibits broad spectrum activity against cultured tumor cell lines, including adriamycin-resistant HL-60 cells. It has a role as a metabolite and an antineoplastic agent. It is a delta-lactone, an organic heterobicyclic compound and a secondary alcohol."}]