Using CC(C)(C)OC(=O)NCCO, O=C(NCCCCc1ccc(O)cc1)OCc1ccccc1 to produce CC(C)(C)OC(=O)NCCOc1ccc(CCCCNC(=O)OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.