Using OB(O)c1cccnc1, CCOC(=O)N1CCc2[nH]c3ccc(Br)cc3c2C1 to produce CCOC(=O)N1CCc2[nH]c3ccc(-c4cccnc4)cc3c2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.