Using CC(C)(C)OC(=O)N1CCC2C1C(C(=O)Nc1cccc3ccccc13)CN2C(=O)OCc1ccccc1 to produce CC(C)(C)OC(=O)N1CCC2NCC(C(=O)Nc3cccc4ccccc34)C21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.