CCn1cc(C(=O)OCC(=O)Nc2cc(S(=O)(=O)N(C)C)ccc2C)c(=O)c2ccc(C)nc21
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?