Using CC(C)(C)OC(=O)N1CCC(O)CC1, CC1Oc2ccc(O)cc2NC1=O to produce CC1Oc2ccc(OC3CCN(C(=O)OC(C)(C)C)CC3)cc2NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.