C=CCN1C(=O)c2ccc(C(=O)N(CCOC)c3c(N)n(CCCC)c(=O)[nH]c3=O)cc2C1=O
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?