Showing structure for 3-[(1's,2s,3s,4s,5'r,7'r,10's,13'r,17'r,18'r,21'r)-1',3,4,6',6',10',17',21'-octamethyl-5-oxo-14'-oxaspiro[oxolane-2,15'-pentacyclo[11.7.1.0²,¹¹.0⁵,¹⁰.0¹⁸,²¹]henicosan]-2'(11')-en-7'-yloxy]-3-oxopropanoic acid