Using OB(O)c1cccnc1, Cc1csc(Nc2ncc(Br)cc2Oc2ccccc2)n1 to produce Cc1csc(Nc2ncc(-c3cccnc3)cc2Oc2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.