CC(=O)OC[C@@]1(C)C(=O)[C@]2(C(C)=C[C@@H]1[C@]1(C[C@@H](C)CCCC(C)C)CCC[C@@H]1C)[C@@H](O)CC[C@H]1C[C@H](O)CC[C@@]12C 11-acetoxy-3β,6α-dihydroxy-9,11-seco-5α-cholest-7-ene-9-one