[H]OC1=C2C(=O)C3=C4C(=C([H])C([H])=C3C(=O)C2=C(O[H])C2=C1C(=O)O[C@]2(OC([H])([H])[H])C([H])([H])[H])C([H])=C(C(Cl)=C4OC([H])([H])[H])C([H])([H])Cl