CNC(=O)C(C)n1cc(-c2cnc(N)c3c(-c4ccc(NC(=O)Nc5ccc(C)cc5)cc4)csc23)cn1
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?