COc1ccc(N2CSC3=C(C#N)C(c4cc(OC)c(OC)cc4OC)CC(=O)N3C2)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?