COc1cc(C2SC(C)C(=O)N2c2ccc(-c3csc(NS(=O)(=O)c4ccc(Cl)c(OC)c4)n3)cc2)ccc1O
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?