Gluten-Free Multigrain Bread with Sourdough

water 18.9% , sourdough 18.9% , rice starch 18.9% , corn starch 18.9% , E460 2.0% , agave syrup 2.0% , quinoa flour 2.0% , psyllium 2.0% , sunflower oil 2.0% , soy protein 2.0% , buckwheat flour 2.0% , sunflower seed 2.0% , yeast 2.0% , millet flour 2.0% , flax seed 2.0% , salt 0.8% , E412 0.8% , sugar 0.8% , honey 0.8% , corn flour 0.0%