N#CCC(=O)N/N=C1/C(=O)N(c2cc(Cl)ccc2Cl)C(=O)C(=O)C1c1nc2ccccc2s1
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?