esomeprazole peptic ulcer drug molecule proton pump inhibitor. skeletal formula.

acid atomic atoms atpase carbon cell chemical chemistry composition compound digestion digestive drawing dyspepsia enantiomer eradication esomeprazol esomeprazola esomeprazole flat formula gastric heartburn helicobacter hydrogen icon inhibitor line molecular molecule nitrogen omeprazole oxygen parietal peptic proton protonpump pump pylori reflux skeletal stomach structure sulfur ulcer