Using CC(C)(C)OC(=O)N1CCN(c2ccc(NC(=O)c3ccccn3)cc2Cl)CC1 to produce O=C(Nc1ccc(N2CCNCC2)c(Cl)c1)c1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.