174286-13-6 186499-39-8 4H-1-Benzopyran-4-one, 3-((4-O-acetyl-6-deoxy-3-O-(2,6-di-O-acetyl-beta-D-glucopyranosyl)-alpha-L-mannopyranosyl)oxy)-7-(beta-D-glucopyranosyloxy)-5-hydroxy-2-(4-methoxyphenyl)-8-(3-methyl-2-butenyl)- Epimedin K Korepimedoside B