C/C(=N/NC(=O)c1ccncc1)c1ccc(NC(=O)C(=O)Nn2c(S)nc3ccccc3c2=O)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?