O=C(/C=C1\C[C@H]2C=Nc3ccccc3C(=O)N2C1)NCCCCNC(=O)/C=C1\C[C@H]2C=Nc3ccccc3C(=O)N2C1
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?