COC(=O)C1=COC(C)C2CN3CCc4c([nH]c5cc(OC)c(OC)cc45)C3CC12.O=C(O)CC(O)(CC(=O)O)C(=O)O
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?