Using CCN(CC)CC, Nc1ccc(S(=O)(=O)O)cc1N to produce O=S(=O)(O)c1ccc2[nH]c(-c3nc4cc(S(=O)(=O)O)ccc4[nH]3)nc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.