O=C1/C(=C\c2cccc(O)c2)N=C(c2ccccc2)N1n1c(-c2ccccc2)nc2ccccc2c1=O
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?