Using OB(O)c1ccncc1, Cn1c(Br)nc(-c2ccccc2)c1-c1nc2c(N)ncnc2s1 to produce Cn1c(-c2ccncc2)nc(-c2ccccc2)c1-c1nc2c(N)ncnc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.