O=C(Cn1c2ccccc2c(=O)c2ccccc21)N/N=C/c1cc([N+](=O)[O-])ccc1N1CCCCC1
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?