Cc1cccc(Oc2nc3ccccn3c(=O)c2/C=C(\C#N)C(=O)NC2CCS(=O)(=O)C2)c1C
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?