Showing structure for (3r,5s,8s,11s,12s,13s,15r)-2,13-dihydroxy-5-(hydroxymethyl)-2,11,12-trimethyl-7,17-dioxapentacyclo[10.3.1.1³,¹⁵.0⁵,¹⁵.0⁸,¹³]heptadec-1(16)-en-6-one