Using OB(O)c1cccnc1, Cn1c(Nc2ccc(Oc3ncccc3Br)cc2)nc2ccccc21 to produce Cn1c(Nc2ccc(Oc3ncccc3-c3cccnc3)cc2)nc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.