12764-54-4 1H-Pyrrole-2-propanoic acid, 2,5-dihydro-4-(15-((2,6-dideoxy-beta-D-ribo-hexopyranosyl)oxy)-12,14,16-trimethyl-1-oxo-2,4,6,8,10,12-heptadecahexaenyl)-3-hydroxy-1-methyl-5-oxo- Oleficin