c1cc(CNC2C3CCC(C3)C2c2c[nH]c3ccccc23)cc(CNC2C3CCC(C3)C2c2c[nH]c3ccccc23)c1
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?