7-Hydroxy-5,11-dioxotetranorprostane-1,16-dioic acid 73303-30-7 Cyclopentaneheptanoic acid, 2-(3-carboxypropyl)-zeta-hydroxy-delta, 3-dioxo-, (1S-(1alpha(S*),2beta))- PGE-M PGM Prostaglandin M