[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][C][=C][C][=C][C@][Branch1][O][/C][\\-Ring1][=Branch1][=C][/C][=Branch1][C][=O][O][C][Branch2][Ring2][#Branch2][C][C][C@@][Branch2][Ring2][Ring1][C@@][Ring1][N][Branch2][Ring1][N][C][C][C@@][Branch2][Ring1][Branch1][C@H1][Ring1][=Branch1][C][C@][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][=Branch1][C][=O][O][C][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is a tetracyclic triterpenoid that is 3,24-dinor-2,4-seco-friedelan-1(10),5,7-triene substituted by methoxycarbonyl groups at positions 2 and 29 and an oxo group at position 4. Isolated from the root bark of Hippocratea excelsa, it exhibits anti-protozoal activity against Giardia intestinalis. It has a role as a metabolite and an antiprotozoal drug. It is a methyl ketone, an enoate ester, a tetracyclic triterpenoid and a methyl ester."}]