Using CC(C)(C)OC(=O)N1CCC(CCN2CCN(c3cccc(C(=O)O)c3)CC2)CC1 to produce CC(C)(C)OC(=O)N1CCC(CCN2CCN(c3cccc(CO)c3)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.