O=C(CCS(=O)(=O)c1nc(-c2ccc3c(c2)OCO3)cc(C(F)(F)F)n1)Nc1ccc(F)c(Cl)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?