Using CC(C)(C)OC(=O)N1CCC(Nc2ccccc2OCC(=O)O)CC1 to produce CC(C)(C)OC(=O)N1CCC(N2C(=O)COc3ccccc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.