[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a L-alpha-D-Hepp-(1->7)-L-alpha-D-Hepp-(1->3)-L-alpha-D-Hepp-(1->5)-alpha-Kdo."}, {"from": "gpt", "value": "[C][Branch1][O][C][Branch1][#Branch1][C][Branch1][Ring1][C][O][O][O][C][=Branch1][C][=O][O]"}]