CCCN1CN([C@@H](C(=O)N[C@@H]2C(=O)N3C2SC(C)(C)C3C(=O)O)c2ccc(O)cc2)CSC1=S
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?