Using CCOC(=O)CC(=O)c1ccccc1, CCOC(=O)c1ccccc1N to produce CCOC(=O)c1cccc2c1N=C(c1ccccc1)CC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.