OCC1OC(OCC(O)C(O)C(O)C(/C=N/Nc2ccccc2)=N/Nc2ccccc2)C(O)C(O)C1O
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?