CC(C)[C@H](Nc1ccc(S(=O)(=O)N2CCOCC2)cc1[N+](=O)[O-])C(=O)OCC(N)=O
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?