Showing structure for (2s,4s,7r,8s,9s,13r,18r,19r)-19-hydroxy-2,9,13,17,17-pentamethyl-7-[(2e)-4-methylpent-2-en-1-yl]-5-oxapentacyclo[10.8.0.0²,⁹.0⁴,⁸.0¹³,¹⁸]icos-1(20)-ene-6,16-dione