Showing structure for (1'r,2r,3'r,8'r,13'r,18'e,20'z,24'r,25's)-5',13',25'-trimethyl-2',10',16',23'-tetraoxaspiro[oxirane-2,26'-tetracyclo[22.2.1.0³,⁸.0⁸,²⁵]heptacosane]-4',18',20'-triene-11',12',17',22'-tetrone