CC(=O)OCC1=C(C(=O)O)N2C(=O)C(NC(=O)c3ccc(COc4ccc(Cl)cc4)o3)C2SC1
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?