Using CNc1ccccn1, O=S(=O)(Cl)c1cc(Br)c(Cl)cc1F to produce CN(c1ccccn1)S(=O)(=O)c1cc(Br)c(Cl)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.