[H]OC1=C2C(N([H])C(=O)[C@]([H])(OC([H])([H])[H])[C@@]2(O[H])C2=C([H])C([H])=C(OC([H])([H])[H])C([H])=C2[H])=C([H])C([H])=C1C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H]