CCCCCC(=O)Cc1cc(O)cc(O)c1C(=O)Oc1cc(CC(=O)CCCCC)c(C(=O)O)c(OC)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?