Showing structure for 12'-hydroxy-5',13',17',26'-tetramethyl-2',10',16',24',29'-pentaoxaspiro[oxirane-2,27'-pentacyclo[23.2.1.1¹⁵,¹⁸.0³,⁸.0⁸,²⁶]nonacosane]-4',19',21'-triene-11',23'-dione