COC(=O)CCCC#C[C@H]1O[C@@H](CC/C=C(Br)/C=C\Br)[C@H](OC)[C@@H]1O	methyl 6-[(2R,3R,4R,5S)-5-[(3Z,5Z)-4,6-dibromohexa-3,5-dienyl]-3-hydroxy-4-methoxyoxolan-2-yl]hex-5-ynoate