Using NCCN, O=Cc1c(-c2ccc(F)cc2)oc2ccc(Cl)c(F)c12 to produce Fc1ccc(-c2oc3ccc(Cl)c(F)c3c2C2=NCCN2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.