[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an indoledione that is the 2,3-diketo derivative of indole. It has a role as an EC 1.4.3.4 (monoamine oxidase) inhibitor and a plant metabolite."}, {"from": "gpt", "value": "[C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][=Branch1][C][=O][N][Ring1][Branch2]"}]