CC(CCC(=O)OCC1OC(C#Cc2ccccc2)C=CC1Oc1ccc(C)cc1)=NOC(C)c1cn(C2COCC2O)nn1
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?