Showing structure for (1's,2r,4'r,5'r,6'r,10's,12's,13's,16'r,21'r)-4,4,4',6',12',17',17'-heptamethyl-9'-oxaspiro[1,5-dioxolane-2,8'-hexacyclo[11.9.0.0¹,²¹.0⁴,¹².0⁵,¹⁰.0¹⁶,²¹]docosan]-18'-one