CCCCOC(=O)C1=C(N)N2C(=O)C(C)SC2=C(C(=O)OCC)C1c1ccc(O)c(OC)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?