Showing structure for (3s,11s)-7,11,14-trihydroxy-18,18-dimethyl-3,8-bis(3-methylbut-2-en-1-yl)-2,10,17-trioxapentacyclo[11.8.0.0³,¹¹.0⁴,⁹.0¹⁶,²¹]henicosa-1(21),4(9),5,7,13,15,19-heptaen-12-one