[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][=C][C][C][N@+1][C@@H1][Ring1][=Branch1][C@@][Branch1][Branch1][C][C][Ring1][Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][Ring1][O][=C][Branch1][Ring2][C][Ring1][#C][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a methyl ester resulting from the formal condensation of the carboxy group of (5S,12bR,12cS)-7-carboxy-1-ethyl-3,6,8,12c-tetrahydro-4H-5,12b-ethanoindolo[3,2-a]quinolizin-5-ium with methanol. It is an alkaloid ester, a methyl ester, a monoterpenoid indole alkaloid, an organic heteropentacyclic compound and a quaternary ammonium ion."}]