Using CCOC(CN(c1ccc(C)c(Br)c1)S(=O)(=O)c1ccccc1)OCC to produce Cc1cc2ccn(S(=O)(=O)c3ccccc3)c2cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.