Seeded enriched steak buns

flour 58.0% , water 21.0% , sugar 3.3% , yeast 3.3% , soya oil 3.3% , salt 0.6% , wheat gluten 0.6% , monoglycerides 0.6% , E282 0.6% , vinegar 0.6% , milled flax seed 0.6% , E516 0.6% , maltodextrin 0.6% , wheat starch 0.6% , E330 0.6% , E300 0.6% , topped with sesame seeds 4.6%