CCn1cc([N+](=O)[O-])c(C(=O)N2N=C(c3ccc(O)c(OC)c3)CC2c2ccccc2O)n1
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?