[{"from": "human", "value": "Describe this molecule. [C][C@H1][C@@H1][C@@H1][Branch2][=Branch1][Ring2][C][=Branch1][C][=O][C@][Branch2][Branch1][O][C@H1][Branch1][=N][C@][Ring1][#Branch1][Branch1][#Branch1][C][=C][C][Ring1][O][=O][C][C][C][C@@H1][C@@][Ring1][N][Branch2][Ring2][C][C][C@@H1][Branch2][Ring1][#Branch1][/C][\\-Ring1][Branch1][=C][Branch1][N][/C][C][C][C][Branch1][C][C][Branch1][C][C][O][\\C][=Branch1][C][=O][O][O][C][=Branch1][C][=O][C][C][C][O][C][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is a tetracyclic triterpenoid that is 29-nordammara-1,17(20)-diene substituted by acetoxy groups at positions 6 and 16, a carboxy group at position 21, a hydroxy group at position 25 and oxo groups at positions 3 and 7 respectively. It is isolated from the marine-derived fungal strain Aspergillus sydowii PFW1-13 and exhibits antibacterial activity. It has a role as an antibacterial agent and an Aspergillus metabolite. It is a tetracyclic triterpenoid, an acetate ester, a tertiary alcohol, an oxo monocarboxylic acid, a cyclic ketone, a 3-oxo-Delta(1) steroid and an alpha,beta-unsaturated monocarboxylic acid."}]