Showing structure for (1'r,2s,3's,8's,12'e,17's,18'r,19'e,21'z,25'r,26's)-18'-hydroxy-5',13',17',26'-tetramethyl-2',10',16',24'-tetraoxaspiro[oxirane-2,27'-tetracyclo[23.2.1.0³,⁸.0⁸,²⁶]octacosane]-4',12',19',21'-tetraene-11',23'-dione