C[C@@H]1CC2[C@@H]3CC[C@H]4CC(=O)CC[C@]4(C)C3=CC[C@]2(C)[C@@]1(O)C(=O)CO
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?