[H]C(=C(Br)Br)C1([H])C([H])(C(=O)OC([H])(C#N)C2=C([H])C(OC3=C([H])C([H])=C(O)C([H])=C3[H])=C([H])C([H])=C2[H])C1(C([H])([H])[H])C([H])([H])[H]