Showing structure for (2s,5s,6s,9s,12s,13r,16s,18r)-16-hydroxy-2,6,13,17,17-pentamethyl-6-(4-methylpent-4-en-1-yl)-7-oxapentacyclo[10.8.0.0²,⁹.0⁵,⁹.0¹³,¹⁸]icos-1(20)-en-8-one