英文名称
2-hydroxy-3-[5-hydroxy-8-[(E)-4-[4-hydroxy-2-[1-hydroxy-3-(3-methyl-2,8-dioxaspiro[5.5]undecan-4-yl)butyl]-2'-methyl-3-methylidenespiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-b]pyran-6,5'-oxolane]-2'-yl]but-3-en-2-yl]-2,10-dimethyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl]-2-methylpropanoic acid