CCN(C(=O)COC(=O)c1cc(-c2ccc3cc(OC)ccc3c2)nc2ccccc12)C1CCS(=O)(=O)C1
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?