Using CCOC(=O)c1c2oc3cc(NC(C)=O)ccc3nc-2c2ccccc2c1=O to produce CCOC(=O)c1c2oc3cc(N)ccc3nc-2c2ccccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.