Using Nc1nc(N)c(C(=O)O)nc1Cl, CCC[C@@H](CN)NC(=O)OC(C)(C)C to produce CCC[C@@H](CNC(=O)c1nc(Cl)c(N)nc1N)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.