Using COC(=O)c1cn2c(=O)cc(CCl)nc2s1, CC(=O)[O-] to produce COC(=O)c1cn2c(=O)cc(COC(C)=O)nc2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.