[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is the (-)-isomer of helminthogermacrene. It has a role as an animal metabolite. It is an enantiomer of a (+)-helminthogermacrene."}, {"from": "gpt", "value": "[C][/C][=C][\\C][C][/C][=Branch1][#C][=C][\\C][C@@H1][Branch1][Branch1][C][C][/-Ring1][#Branch2][C][=Branch1][C][=C][C][/C]"}]