Using C[O-], Cc1c(Sc2ccc(Cl)nn2)oc2ccc(Cl)cc12 to produce Cc1c(Sc2ccc(=O)[nH]n2)oc2ccc(Cl)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.