CC(=O)O[C@@H]1CO[C@@H](O[C@@H]2CC[C@@]3(CO)C(=CC[C@@H]4[C@@H]3CC[C@]3(C)[C@@H]([C@H](C)CCCC(C)C)CC[C@@H]43)C2)[C@@H](O)[C@@H]1O 4'-O-Acetyl-3-O-[β-D-arabino-pyranosyl-oxy]-cholest-5-ene-3β,19-diol