(Z)-7-((1R,2R,3R,5S)-5-hydroxy-3-((tetrahydro-2H-pyran-2-yl)oxy)-2-((1E,3S,5Z)-3-((tetrahydro-2H-pyran-2-yl)oxy)octa-1,5-dien-1-yl)cyclopentyl)hept-5-enoic acid