Using CCOC(=O)N1CCNCC1, O=C1C=CC(=O)c2ncccc21 to produce CCOC(=O)N1CCN(C2=CC(=O)c3ncccc3C2=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.