Showing structure for 2',6',12',12'-tetramethyl-5'-[1-(5-methyl-6-oxo-2,3-dihydropyran-2-yl)ethyl]-13'-oxaspiro[oxane-3,10'-tetracyclo[9.2.2.0¹,⁹.0²,⁶]pentadecan]-8'-en-6-one