Using CCCC(=O)c1cnc2c(OCCSC)cccc2c1Nc1ccccc1C(C)C, O=C([O-])O to produce CCCC(=O)c1cnc2c(OCCS(C)=O)cccc2c1Nc1ccccc1C(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.