[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][Ring1][Ring2][C][C][Ring1][Ring2][C][C][Ring1][Ring2][C][C][Ring1][Ring2][C][C][Ring1][Ring2]"}, {"from": "gpt", "value": "The molecule is a fatty acid methyl ester consisting of methyl hexanoate, which is terminally substituted by five fused butane-rings ([5]-ladderane). Ladderane fatty acid methyl esters are core lipids of anammox bacteria. It is a ladderane and a fatty acid methyl ester. It is functionally related to a methyl hexanoate."}]