COc1cc(C(=O)Nc2ccc3c(c2)Cc2cc(NC(=O)c4cc(OC)c(OC)c(OC)c4)ccc2-3)cc(OC)c1OC
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?