5-Hydroxy-8,8-dimethyl-10-(2-methylbut-3-en-2-yl)-2<i>H</i>,6<i>H</i>-7,8-dihydropyrano[3,2-<i>g</i>]chromene-2,6-dione

C₁₉H₂₀O₅

Fun, Hoong-KunSripisut, TawanunLaphookhieo, SuratChantrapromma, Suchada

Acta Crystallographica Section E (2011) 67, 2 o422-o423

a=10.2239(2)Å   b=11.3090(3)Å   c=13.8764(3)Å

α=90.00°   β=93.1080(10)°   γ=90.00°