Using O=C1CCCN1CCO, O=C1c2ccccc2-c2ncc(O)cc21 to produce O=C1c2ccccc2-c2ncc(OCCN3CCCC3=O)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.