Using CC(C)(C)OC(=O)N1CCNCC1, COC(=O)c1ccc(-c2ccc(CC=O)cc2OC)cc1 to produce COC(=O)c1ccc(-c2ccc(CCN3CCN(C(=O)OC(C)(C)C)CC3)cc2OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.