CC(=O)O[C@H]1CC[C@]2(C)C3=CC[C@]4(C)[C@@H]([C@H](C)CCC=C(CO)CO)CC[C@@]4(C)C3=CC[C@H]2C1(C)C lanosta-7,9(11),24E-trien-3β-acetyloxy-26,27-diol