[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch1][C][C][C][C][C][/C][=Branch2][Ring1][#Branch2][=C][/C][C][/C][=Branch2][Ring1][C][=C][/C][C][/C][=Branch1][O][=C][\\C][C][C][Branch1][C][C][C][C][O][/C][/C][/C]"}, {"from": "gpt", "value": "The molecule is any one of a group of polyprenols made up of varying numbers of cis-linked isoprene units, terminating in an alpha-saturated isoprenoid group containing an alcohol functional group. Dolichol used by archaea is is generally much shorter (C55-C60) than that used by eukaryotes and may have additional saturation positions in the chain. It is an isoprenoid and a polyprenol."}]