Showing structure for (1s,2r,6s,7r,9r,11s,12s,15s,16s)-15-acetyl-6-hydroxy-2,16-dimethyl-8-oxapentacyclo[9.7.0.0²,⁷.0⁷,⁹.0¹²,¹⁶]octadec-4-en-3-one