CC(C)(O)C#Cc1cccc(-c2nc(C(=O)NCCCN3CCOCC3)cc3c2[C@H](CCO)N([S+]([O-])C(C)(C)C)C3)c1
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?