Showing structure for 13,13''-bis(acetyloxy)-12''-[(acetyloxy)methyl]-9,9'',10,10''-tetrahydroxy-12,12''-dimethyl-7,7''-dioxodispiro[17-oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecane-6,2'-cyclobutane-1',6''-[17]oxapentacyclo[7.6.2.1⁵,⁸.0¹,¹¹.0²,⁸]octadecan]-12-ylmethyl acetate