Showing structure for (1s,4r,5s,7s,11r,13s,17s,18s,19s)-4,5,17-trihydroxy-14,18-dimethyl-6-methylidene-3,10-dioxapentacyclo[9.8.0.0¹,⁷.0⁴,¹⁹.0¹³,¹⁸]nonadec-14-ene-9,16-dione