[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an abietane diterpenoid that is miltiradiene in which the carbon at position 11 has been oxidised to the corresponding oxo group. It has a role as a plant metabolite. It is an abietane diterpenoid, a carbotricyclic compound, a tricyclic diterpenoid and a cyclic ketone. It is functionally related to a miltiradiene. It is a conjugate acid of an 11-oxomiltiradiene(1-)."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][=C][C][=Branch1][C][=O][C][=C][Branch1][Ring2][C][Ring1][#Branch1][C][C][C@@H1][C@@][Ring1][#Branch1][Branch1][O][C][C][C][C][Ring1][=Branch1][Branch1][C][C][C][C]"}]