CCOC(=O)[C@H]1[C@H]2COc3cc(OC)ccc3[C@@H]2N2C(=O)CN(Cc3ccco3)C(=O)[C@@]12C
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?