Using O=C(O)c1cccc(Cn2nc(-c3cc(F)cc(F)c3)ccc2=O)c1, COC(CN)OC to produce COC(CNC(=O)c1cccc(Cn2nc(-c3cc(F)cc(F)c3)ccc2=O)c1)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.