Using CSC1=NCCN1, NCc1cccc2cc(S(=O)(=O)c3ccccc3)ccc12 to produce O=S(=O)(c1ccccc1)c1ccc2c(CNC3=NCCN3)cccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.