CC(=O)c1ccc(N2CCN(c3nc4c(S(=O)(=O)c5ccccc5)nnn4c4ccc(Cl)cc34)CC2)cc1
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?