[H]OC1=C([H])C(O[H])=C2C(=O)C(OC([H])([H])[H])=C(OC2=C1[H])C1=C([H])C([H])=C(O[H])C(O[H])=C1C([H])([H])[C@]1([H])C(=C([H])C([H])([H])C([H])([H])C1(C([H])([H])[H])C([H])([H])[H])C([H])([H])[H]