CCOC1=CC2=C(C(=O)C(Cl)=CC2=O)[C@@H]2CN(S(=O)(=O)c3ccc(C)cc3)[C@@H](c3ccccc3)[C@H]12
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?