[H]OC1=C([H])C2=C(C(=O)C3=C(C2=O)C(O[H])=C(C([H])=C3[H])[C@]2([H])O[C@@]([H])(C([H])([H])[H])[C@@]([H])(N(C([H])([H])[H])C([H])([H])[H])C([H])([H])C2([H])[H])C2=C(O[H])C([H])=C(C([H])=C12)C([H])([H])[H]