O=C1C(Cl)C2(CC(/C=C/c3ccccc3)=NN2c2cccc(S(=O)(=O)O)c2)N1c1nc2ccccc2s1
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?