[{"from": "human", "value": "Provide a description of this molecule. [C][C@@H1][Branch1][=N][C][C@H1][Branch1][#Branch1][C][=C][Branch1][C][C][C][O][C][C@@H1][C][C][C@][Branch2][Ring2][Ring2][C@][Ring1][Branch1][Branch2][Ring1][=N][C][C][C@H1][C][Ring1][=Branch1][=C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][=C][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][Branch1][C][C][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is a tirucallane triterpenoid that is (13alpha,14beta,17alpha,20S)-lanosta-7,24-diene substituted by an oxo group at position 3 and a methoxy group at position 23. It has been isolated from the stem and stem barks of Cornus walteri. It has a role as a plant metabolite. It is a cyclic terpene ketone, a tirucallane triterpenoid and an ether."}]