COc1cccc([C@H]2Oc3ccc(OC)cc3/C(=N\OCC[C@@H]3C=C[C@H](OC(C)=O)[C@H](COC(C)=O)O3)[C@@H]2O)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?