Cc1ccc(O)c(-c2cc(C(=O)Nc3ccc(S(=O)(=O)Nc4nc(C)cc(C)n4)cc3)[nH]n2)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?