C/C=C/[C@H]1CC(=O)C2=C(O1)[C@@]1(C)[C@H]3/C(=C(O)\C=C\C=C\CO)C(=O)C(C)=C(O)[C@@]3(C)O[C@@]1(O)[C@@](C)(O)C2 24-hydroxy-trichobisvertinol D