Using OB(O)c1cccc2cccnc12, CC(C)(C)OC(=O)Nc1ccccc1NC(=O)c1ccc(Br)cc1 to produce CC(C)(C)OC(=O)Nc1ccccc1NC(=O)c1ccc(-c2cccc3cccnc23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.