Using CCOC(=O)C1=C(C)NC(N)=C(C(=O)OCC)C1c1ccccc1, CC[O-] to produce CCOC(=O)C1=C(C)N=C(N)C(C)(C(=O)OCC)C1c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.