1H-Cyclohepta[1,2-a:5,4-a′]dinaphthalene-3,11-diol, 2,3,4,4a,5,6,6a,7,9,9a,10,11,12,13,13a,13b,14,15,15a,15b-eicosahydro-4,4,6a,10,10,13a,15b-heptamethyl-, 3-acetate, (3S,4aR,6aS,9aR,11R,13aR,13bS,15aS,15bR)-