CCOC1=C2CN(S(=O)(=O)c3ccc(C)cc3)[C@H](c3ccccc3)C[C@@H]2N(S(C)(=O)=O)[C@H](c2ccccc2)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?