Using Nc1ccn(-c2ccccc2)n1, CCOC(=O)CC(=O)c1ccccc1 to produce O=c1cc(-c2ccccc2)nc2ccn(-c3ccccc3)n12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.