Using Cc1cc(OCc2ccc(C3CCN(CCC(=O)OC(C)(C)C)CC3)cc2)ccc1C1CCSCC1 to produce Cc1cc(OCc2ccc(C3CCN(CCC(=O)O)CC3)cc2)ccc1C1CCSCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.