109838-17-7 2-Pentalenepentanoic acid, 1,3a,4,5,6,6a-hexahydro-5-hydroxy-6-(3-hydroxy-1-octenyl)-delta-methylene-, (3aS-(3aalpha,5beta,6alpha(1E*,3R*),6aalpha))- 5-MM-Pgi 5-Methylene-9(0)-methano-delta(6)-prostaglandin I(1) 5-Methyleneisocarbacyclin