Using CCOC(OCC)OCC, CCOC(=O)C(Cc1ccc(O)c(N)c1)NC(=O)OC(C)(C)C to produce CCOC(=O)[C@H](Cc1ccc2ocnc2c1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.