Showing structure for (2r,4's,5s,6r,8'r,10'e,13'r,14'e,16'z)-6-ethyl-21'-hydroxy-18'-methoxy-5,11',13',22'-tetramethyl-3',7',19'-trioxaspiro[oxane-2,6'-tetracyclo[15.6.1.1⁴,⁸.0²⁰,²⁴]pentacosane]-1'(24'),10',14',16',20',22'-hexaen-2'-one