[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is the simplest member of the class of depsidones comprising of a heterotricyclic system that is 11H-dibenzo[b,e][1,4]dioxepine substituted by an oxo group at position 11. It is a member of depsidones and an organic heterotricyclic compound."}, {"from": "gpt", "value": "[C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][=C][C][=C][C][=C][Ring1][=Branch1][O][Ring1][=N]"}]