Using CC(=O)N1Cc2nc(Cl)nc(N3CCOCC3)c2C1, C[C@H]1COCCN1c1nc(Cl)nc2c1CNC2 to produce CC(=O)N1Cc2nc(Cl)nc(N3CCOC[C@@H]3C)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.