Cc1nnc(SCC2=C(C(=O)O)N3C(=O)C(NC(=O)Cn4ncc(Cl)c4C)C3SC2)s1
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?