1-Pbcoo 1-Pyrenemethyl-23,24-bisnor-5-cholen-22-oate-3beta-yl oleate 72535-39-8 Pregn-5-ene-20-carboxylic acid, 3-((1-oxo-9-octadecenyl)oxy)-, 1-pyrenylmethyl ester, (3beta(Z),20S)-