Using CN1CCC(OC(=O)Nc2cc(CCC(=O)OC(C)(C)C)ccc2-c2ccccc2)CC1 to produce CN1CCC(OC(=O)Nc2cc(CCC(=O)O)ccc2-c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.