C/C(CCC(=O)OC[C@@H]1O[C@H](C#Cc2ccccc2)C=C[C@@H]1Oc1ccc(C)cc1)=N/OC[C@@H](C)[C@H](OCc1ccccc1)C(C)C
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?