CCOC(=O)C(C)(C)Oc1ccc2c(-c3ccc(Cl)cc3)c(-c3ccc(Cl)cc3)c(=O)oc2c1
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?