Cc1ccc(NS(=O)(=O)c2cc(C(=O)Nc3cccc(N(C)S(C)(=O)=O)c3)ccc2C)c(C)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?