Using C1CCCNCC1, O=C(O)CC1CCCc2c1cnn2-c1ccccc1 to produce O=C(CC1CCCc2c1cnn2-c1ccccc1)N1CCCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.