CCS(=O)(=O)C1=NSC2=NC(=O)/C(=C\c3ccc(OS(=O)(=O)c4ccccc4)c(OC)c3)C(=N)N21
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?