CC(C)(C)[C@@H]1C=C(C(=O)N2CCN(Cc3ccc4c(c3)OCO4)CC2)O[C@H](OCc2ccc(CO)cc2)C1
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?