COC1=C[C@H]2C3=C([C@H]2C1=O)[C@H](NC(C)=O)CCc1cc(OC)c(OC)c(OC)c13
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?