COc1cc(/C=C(\NC(=O)c2cc(OC)c(OC)c(OC)c2)C(=O)NC(C(=O)O)c2ccccc2)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?