Using O=S(=O)(c1ccccc1)n1ccc2c(Cl)nc(-c3ccccc3)nc21, O=C=O to produce O=C([O-])c1cc2c(Cl)nc(-c3ccccc3)nc2n1S(=O)(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.