O=C(NC1CCN(Cc2ccccc2)CC1)c1ccc(Cn2c(=O)c3ccccc3n(Cc3ccc(Cl)cc3)c2=O)cc1
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?