C=CCN1C(=O)NC(c2ccccc2)(C(F)(F)F)S/C1=C(/C#N)c1nnc(N2CCOCC2)n1-c1ccccc1
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?