C=CC(=O)N(C(=O)[C@@H]1CCOc2ccc(Cl)cc21)c1nncn1C1CC1
CC#CC(=O)N(C(=O)[C@@H]1CCOc2ccc(Cl)cc21)c1nncn1C1CC1
C=CC(=O)N[C@@]1(C(=O)Nc2nncn2C2CC2)CCOc2ccc(Cl)cc21
Trying to find a way towards the Cysteine by eye by overlay with covalent Ugi compounds.
Imides may have accessibility/stability issues.