CC(=O)N1CCN(C2CCC(n3nc(-c4ccc(NC(=O)c5cc6ccccc6n5C)cc4)c4c(N)ncnc43)CC2)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?