Cn1c(=O)c(=O)n(C)c2cc(N3CCOCC3)c(NS(=O)(=O)c3ccc([N+](=O)[O-])cc3)cc21
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?