Using Cc1ccc(Oc2ccc(OC[C@H]3CCCN3C(=O)OC(C)(C)C)cc2)cc1 to produce Cc1ccc(Oc2ccc(OC[C@H]3CCCN3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.