Showing structure for (1r)-1-[(1s,2r,5s)-4-oxo-3-oxabicyclo[3.1.1]heptan-2-yl]-1-[(9r,13r,16s,17r)-8,8,13,17-tetramethyl-6-oxo-7-oxatetracyclo[10.7.0.0³,⁹.0¹³,¹⁷]nonadeca-1(12),2,4-trien-16-yl]ethyl acetate