COc1cccc(NC(=O)C2C3C=CC4(O3)C2C(=O)N(CCCN2CCCCC2)C4C(=O)NC2CCCCC2)c1
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?