C/C=C(\C)C(=O)NCCN1C2=NC[C@H](Cc3ccccc3)N2C[C@H]1Cc1ccc(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?