Using CCOC(=O)CNCCOc1ccc(CCCCNC(=O)OC(C)(C)C)cc1 to produce CC(C)(C)OC(=O)NCCCCc1ccc(OCCNCC(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.