[H]OC(=O)[C@]1(C([H])([H])[H])[C@@]([H])(O[H])C([H])([H])C([H])([H])[C@@]2(OC3=C([H])C4=C(N([H])C5=C([H])C([H])=C([H])C([H])=C45)C([H])=C3C([H])([H])C([H])([H])[C@@]12[H])C([H])([H])[H]