Showing structure for (1s,4r,5r,8r,13r,14r,17s,18s,20s)-20-isopropyl-4,5,9,9,13-pentamethyl-19,21-dioxahexacyclo[18.2.2.0¹,¹⁸.0⁴,¹⁷.0⁵,¹⁴.0⁸,¹³]tetracosan-10-one