COc1ccc(C(CC(=O)N2CCOCC2)c2c(OC)cc(OC)c3c(-c4ccccc4)cc(=O)oc23)cc1
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?