COC1(OC)C(Br)=C[C@](CC#N)(OC(C)=O)[C@@H](OC(C)=O)[C@@H]1Br	[(1R,2S,6S)-2-acetyloxy-4,6-dibromo-2-(cyanomethyl)-5,5-dimethoxycyclohex-3-en-1-yl] acetate