Using COCCOc1cn[nH]c1, CSc1nc2ccccc2c(=O)[nH]1 to produce COCCOc1cnn(-c2nc3ccccc3c(=O)[nH]2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.