[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][Branch1][N][/C][=C][/C@H1][Branch1][C][C][C][Branch1][C][C][C][C@H1][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring1][=Branch2][C][C][C@H1][C@H1][Ring1][=Branch1][C][C][=C][C@@][Ring1][=Branch1][Branch1][#Branch2][C][C][C@@H1][Branch1][Ring2][C][Ring1][=Branch1][O][C][C]"}, {"from": "gpt", "value": "The molecule is a steroid derivative characterized by the hydroxyl group in position C-3 of the steroid skeleton, elimination of carbon 24.2 of the alkyl substituent, and unsaturated bonds in position 5-6 of the B ring, and position 22-23 in the alkyl substituent. It is synthesized by several unicellular algae and some terrestrial plants."}]