英文名称
3-[(2E,4E)-5-[2-[5-[5-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)-3-methylpenta-1,3-dienyl]-4-hydroxy-2-methyl-6-oxo-1,3-dioxin-2-yl]-4-hydroxy-2-methyl-6-oxo-1,3-dioxin-5-yl]-3-methylpenta-2,4-dienylidene]-9-methyl-9-propan-2-yl-1,5-dioxaspiro[5.5]undecane-2,4-dione