Using O=C1NC(=O)c2ccccc21, CC(C)(C)OC(=O)C(c1ccc(CBr)cc1)C1CCCC1 to produce CC(C)(C)OC(=O)C(c1ccc(CN2C(=O)c3ccccc3C2=O)cc1)C1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.