Using O=S(=O)(O)Cl, O=C(COc1ccccc1)Nc1ccccn1 to produce O=C(COc1ccc(S(=O)(=O)Cl)cc1)Nc1ccccn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.