Using CCNC(=O)Nc1nc2ccc(Br)cc2s1, OB(O)c1ccc(Cl)s1 to produce CCNC(=O)Nc1nc2ccc(-c3ccc(Cl)s3)cc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.