Using C1COCCN1, O=C(O)C=C1CCCc2c1cnn2-c1ccccc1 to produce O=C(C=C1CCCc2c1cnn2-c1ccccc1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.