Using CCOC(=O)C(C(=O)OCC)c1ccc(-n2cc(Cl)cn2)c(Cl)c1, CC[O-] to produce CCOC(=O)C(C)(C(=O)OCC)c1ccc(-n2cc(Cl)cn2)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.