Using [NH4+], CCOC(=O)c1ncn([C@H](CCc2cccc(Cl)c2Cl)[C@H](C)O)n1 to produce C[C@H](O)[C@@H](CCc1cccc(Cl)c1Cl)n1cnc(C(N)=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.