Using O=C(O)CN1CCOCC1, Nc1cc(F)cc(-c2ccc3ncnc(N)c3c2)c1 to produce Nc1ncnc2ccc(-c3cc(F)cc(NC(=O)CN4CCOCC4)c3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.