Using CC(C)(C)OC(=O)NCCO, O=C(O)COc1ccc(CCCCNC(=O)OCc2ccccc2)cc1 to produce CC(C)(C)OC(=O)NCCOC(=O)COc1ccc(CCCCNC(=O)OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.