Showing structure for 5,7,16,18-tetrakis(acetyloxy)-19-[3,5-bis(acetyloxy)phenoxy]-10,14,21-trioxapentacyclo[11.8.0.0³,¹¹.0⁴,⁹.0¹⁵,²⁰]henicosa-1,3(11),4(9),5,7,12,15(20),16,18-nonaen-2-yl acetate