Using O=S(=O)(Cl)c1cccnc1, Nc1cnc2c(Br)cccc2c1 to produce O=S(=O)(Nc1cnc2c(Br)cccc2c1)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.