Showing structure for (1s,4s,8r,9r,12s,13s,14s,16s,18r)-14,18-dihydroxy-9-methoxy-7,7-dimethyl-17-methylidene-3,10-dioxapentacyclo[14.2.1.0¹,¹³.0⁴,¹².0⁸,¹²]nonadecan-2-one