CC/C=C/[C@H](C)[C@H]1CC[C@@H](C2=C[C@H](O)[C@H]3C[C@@H](O)CC[C@]3(C)C2=O)[C@]1(C)/C=C/O 24-nor-3β,6α,11-trihydroxy-9,11-seco-5α-cholest-7,22(E)-diene-9-one