COC(=O)c1ccc(C(NC(=O)OCc2ccccc2)/C(=C/[C@@H](C)C(=O)NCc2ccc(-c3ccccc3)cc2)c2cccnc2)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?