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