COc1cc(OC)c2c(-c3ccccc3)cc(=O)oc2c1C(CC(=O)N1CCN(c2ccccc2)CC1)c1ccc2c(c1)OCO2
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?