C#C/C=C/C[C@H]1O[C@@H](CC)[C@@H](Br)C/C=C\C[C@H]1Cl (2S,3S,5Z,8R,9R)-3-bromo-8-chloro-2-ethyl-9-[(E)-pent-2-en-4-ynyl]-2,3,4,7,8,9-hexahydrooxonine