[H]C1(O)C2=C(C=C(N=C(O)CNC(C)(C)C)C(O)=C2C(=O)C2([H])C([H])(O)[C@]3(O)C(=O)CC(=O)C([H])(N(C)C)C3([H])CC12[H])N(C)C