[H]O[C@]1(C2=C([H])C([H])=C([H])C([H])=C2N2C(=O)C(N([H])[C@@]12[H])(C([H])([H])[H])C([H])([H])[H])C([H])([H])[C@@]1([H])N2C(=O)C3=C(N=C2[C@@]([H])(N([H])C1=O)C([H])(C([H])([H])[H])C([H])([H])[H])C([H])=C([H])C([H])=C3[H]