label: 2-(prostaglandin H2)-sn-glycero-3-phosphoethanolamine = 2-(prostaglandin E2)-sn-glycero-3-phosphoethanolamine
label_lc: 2-(prostaglandin h2)-sn-glycero-3-phosphoethanolamine = 2-(prostaglandin e2)-sn-glycero-3-phosphoethanolamine