COCCn1c(=O)[nH]c(=O)c2c1nc(-c1ccc(-c3ccc(Cl)cc3[N+](=O)[O-])o1)n2Cc1ccccc1
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?