COCC#Cc1ccc(C2C(C)CCC3C(=O)N4C(CCC(C)C4c4ccc(C#CCOC)cc4)C(=O)N32)cc1
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?