C=C[C@H]1[C@H](OC2OC(CO)C(O)C(O)C2O)OC=C(C(=O)OC)[C@H]1C[C@H]1CC(=O)C[C@H](CC(=O)CCc2ccc(O)cc2)O1
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?