Oc1ccc2c3c1O[C@@H]1[C@@H](O)CC[C@]4(O)[C@H](C2)N(CC2CCC2)CC[C@@]314
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?