Using CCOC(=O)c1cc2cnnc(Nc3cc(C(=O)O)ccc3OC)n2c1C, NC1CC1 to produce CCOC(=O)c1cc2cnnc(Nc3cc(C(=O)NC4CC4)ccc3OC)n2c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.