COC1(OC)C(Br)=C[C@@]2(O)CC(=O)O[C@H]2[C@H]1Br	(3aS,7R,7aR)-5,7-dibromo-3a-hydroxy-6,6-dimethoxy-7,7a-dihydro-3H-1-benzofuran-2-one