CCOC(=O)C1=C(O)/C(=C/c2ccc(CNC(=O)C(=O)Nc3ccc(C)cc3)o2)N=C1C
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?