Using CC(=O)c1cc(Cl)c(C)c(C(=O)O)c1OCCNC(=O)OC(C)(C)C to produce Cc1c(Cl)cc(C(C)O)c(OCCNC(=O)OC(C)(C)C)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.