C[C@H](NS(=O)(=O)c1ccc(Cl)c(Cl)c1)C(=O)OCc1cc(=O)n2cc(Br)ccc2n1
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?