Using CCOC(=O)C(=O)OCC, CC(=O)Cc1ccc(OCC(N)=O)cc1 to produce CC(=O)Cc1ccc(OC2=C(O)C(=O)NC2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.