CCOC(=O)C1=C(NC(=O)c2ccc(C)c(S(=O)(=O)N3CCOCC3)c2)Nc2ccccc2N=C1CC
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?