Using CCCC(CCC)Nc1cc(C(=O)OC)ccc1N1C(=O)CCC1(CO)CO to produce CCCC(CCC)Nc1cc(C(=O)O)ccc1N1C(=O)CCC1(CO)CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.