116709-67-2 2H-Pyran-3(6H)-one, 2-(((3beta,20S)-20-((2,6-dideoxy-3-O-(methoxymethyl)-beta-D-arabino-hexopyranosyl)oxy)-17-hydroxypregn-5-en-3-yl)oxy)-4-methoxy-6-methyl- Periplocoside O