C[C@@H]1[C@H]2C3=CC[C@@H]4[C@]5(C)C[C@H](O)[C@@H](O)[C@@](C)(CO)[C@@H]5[C@H](O)C[C@]4(C)[C@]3(C)CC[C@@]2(C(=O)O)CC[C@H]1C
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?