[H]C12CC3=C(C=C(N=C(O)CNC(C)(C)C)C(O)=C3C(=O)C1=C(O)[C@]1(O)C(=O)C([H])(C(O)=N)C(=O)C([H])(C1([H])C2)N(C)(C)=O)N(C)C