Using CC(C)(C)OC(=O)N1CCNCC1, CC1Cc2cc(CC=O)ccc2C(=O)O1 to produce CC1Cc2cc(CCN3CCN(C(=O)OC(C)(C)C)CC3)ccc2C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.