COc1ccc([C@H]2[C@H](c3ccccc3)C(=O)N2Cc2ccccc2)cc1COc1ccc(NC(C)=O)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?