CCCCCCCCCCC(O)C1CCC(C(O)CCC(O)C2CCC(CCCCCCC[C@H](O)CC3=C[C@@H](C)OC3=O)O2)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?