CC(=O)OCC(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(/C=N/N(C(C)=O)S(=O)(=O)c1ccc(/C=C2\NC(=O)N(C)C2=O)cc1)OC(C)=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?