C=CC1(C)CCC2C(=CCC3C2(C)CC(O)C(O)C3(C)COC2OC(CO)C(O)C(O)C2O)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?