CCOC(=O)c1ccc(NC2Oc3cc4c(cc3C(c3cc(OC)c(OC)c(OC)c3)C2C)OCO4)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?