[H]O[C@]1([H])O[C@]2([H])N3C1=C1C(=O)C(OC([H])([H])[H])=C(C(=O)[C@@]1(O[H])[C@]1([H])N4C([H])([H])C([H])([H])O[C@]4([H])[C@@]4([H])C([H])([H])[C@]2([H])N(C([H])([H])[H])[C@@]4([H])[C@]31[H])C([H])([H])[H]