[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][C][C][C][/C][=C][/C@H1][C][C][C@@H1][Branch1][#C][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][C][C][=Branch1][C][=O][O][Ring1][S][O]"}, {"from": "gpt", "value": "The molecule is a macrolide that is 4,15-dioxabicyclo[9.3.1]pentadec-9-en-3-one substituted by a hydroxy group at position 14 and a methyl group at position 5 (the 1S,5S,9E,11R,14S stereoisomer). It is isolated from the marine-derived fungus Aspergillus ostianus and exhibits cytotoxic activity against mouse lymphocytic leukemia cells (L1210). It has a role as an antineoplastic agent and an Aspergillus metabolite. It is a bridged compound, a cyclic ether, a macrolide and a secondary alcohol."}]