Using OB(O)c1cncnc1, O=c1ccn2c(-c3ccc(F)cc3)cccc2c1-c1c(F)cc(Br)cc1F to produce O=c1ccn2c(-c3ccc(F)cc3)cccc2c1-c1c(F)cc(-c2cncnc2)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.