Using O=C1CC(C(=O)N2CCOCC2)C1, Brc1ccc(CN2CCCC2)cc1 to produce O=C(C1CC(O)(c2ccc(CN3CCCC3)cc2)C1)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.