3-(5-Benzylidene-4-hydroxy-2-oxo-2,5-dihydro-furan-3-yl)-2,3-diphenyl-propionic acid methyl ester 3-furanpropanoic acid, 2,5-dihydro-4-hydroxy-2-oxo-alpha,beta-diphenyl-5-(phenylmethylene)-, methyl ester, (alphaR,betaR,5Z)- InChI=1/C27H22O5/c1-31-26(29)23(20-15-9-4-10-16-20)22(19-13-7-3-8-14-19)24-25(28)21(32-27(24)30)17-18-11-5-2-6-12-18/h2-17,22-23,28H,1H3/b21-17-/t22-,23+/m1/s Pulveraven A methyl rel-(2R,3S)-3-[(5Z)-5-benzylidene-4-hydroxy-2-oxo-2,5-dihydrofuran-3-yl]-2,3-diphenylpropanoate