Using O=CCc1ccc2c(=O)occc2c1, CC(C)(C)OC(=O)N1CCNCC1 to produce CC(C)(C)OC(=O)N1CCN(CCc2ccc3c(=O)occc3c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.