Nc1cccc(/C=C/CN2CCN(CCOC(c3ccccc3)c3ccccc3)CC2)c1.O=C(O)/C=C\C(=O)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?