CS(=O)(=O)O.Cn1cc(C(F)(F)F)nc1-c1ccc(OC[C@@H](O)CNCCOc2ccc(O)c(C(N)=O)c2)cc1
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?