Using CCOC(=O)c1cccc(CN(CC(=O)OC(C)(C)C)C(=O)OCc2ccccc2)n1 to produce CC(C)(C)OC(=O)CN(Cc1cccc(C(=O)O)n1)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.