Using OB(O)c1ccc(F)cc1, Cc1c(Br)cccc1-n1c(=O)cc[nH]c1=O to produce Cc1c(Br)cccc1-n1c(=O)ccn(-c2ccc(F)cc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.