Using O=C([O-])[O-], CCOC(=O)C(C)c1csc(Nc2ccccc2)n1 to produce CCOC(=O)C(C)c1csc(=Nc2ccccc2)n1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.