Using Nc1ncc(Br)cc1OCc1ccccc1, S=C=Nc1cccnc1Cl to produce Brc1cnc(Nc2nc3cccnc3s2)c(OCc2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.