Using On1nnc2cccnc21, COc1ccc(CN2CCc3c(C(=O)O)ncc(OC)c3C2=O)cc1 to produce COc1ccc(CN2CCc3c(C(=O)N(C)C)ncc(OC)c3C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.