O=C(O)c1nc(Cl)c(Cl)c(N/N=C/c2ccc(N3CCOCC3)c([N+](=O)[O-])c2)c1Cl
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?