COC(=O)C1=C(C(=O)OC)N(c2ccc(OC)cc2[N+](=O)[O-])C(c2ccc(C)cc2)=CC1c1ccc(OC)cc1OC
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?