英文名称
methyl 3-[2-[4-[2-[3-(3,11-dimethyl-1,7-dioxaspiro[5.5]undecan-2-yl)-1-hydroxybutyl]-4-hydroxy-3-methylidenespiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-b]pyran-6,5'-oxolane]-2'-yl]butan-2-yl]-11-hydroxy-4-methyl-1,7-dioxaspiro[5.5]undec-4-en-8-yl]-2-hydroxy-2-methylpropanoate