CCCCN1C(=O)C2C(C(=O)Nc3cccc(OC)c3)C3C=CC2(O3)C1C(=O)NC1CCCCC1C
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?