Showing structure for (1s,3r,6s,9s,10s,11s,17r,19s,20r)-3,6,19-trimethyl-9-(prop-1-en-2-yl)-16-oxapentacyclo[12.5.1.0³,¹¹.0⁶,¹⁰.0¹⁷,²⁰]icos-13-en-17-ol