C=C(CC[C@H](C)C[C@@]1([C@H]2C=C(C)[C@@]3(C(=O)[C@]2(C)CO)[C@@H](O)CC[C@H]2C[C@H](O)CC[C@@]23C)CCC[C@@H]1C)C(C)C 3β,6α,11-trihydroxy-24-methylene-9,11-seco-5α-cholest-7-ene-9-one