CCCN1C(=O)C2(C(C(=O)c3ccc4c(c3)OCCO4)=C(O)C(=O)N2CCCOC)c2ccccc21
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?