Showing structure for (1r,4s,7r,8s,13r,14r,16s)-13-hydroxy-10,14-dimethyl-7-(prop-1-en-2-yl)-2,3,18-trioxapentacyclo[6.6.2.2¹,⁴.0⁴,¹⁶.0¹²,¹⁵]octadeca-9,12(15)-dien-11-one