Using O=C(Nc1cccc(F)c1)Nc1ncc(CCN2C(=O)c3ccccc3C2=O)s1 to produce NCCc1cnc(NC(=O)Nc2cccc(F)c2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.