COC(=O)Nc1nc2cc(Oc3ccc(NC(=O)Nc4cccc(C(=O)O)c4)cc3)ccc2[nH]1.Cl
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?