“…)02 ,.,.,f.,'c~o ORTEP drawing (at 50% probability) of 8,9,10,11-tetrahydro-10-methyl-(3aa,8a, 10a)-3a,8-methano-3aH-cyclopentacyclodecene-2,12(3H)-dione showing the adopted labeling. Moore & Rege, 1986). The structure of ingenol triacetate, a modified derivative of the natural product ingenol-3'hexadecanoate, has been examined (Zechmeister, Brandl & Hoppe, 1970;Paquette, Nitz, Ross & Springer, 1984).…”