COc1ccc(-n2c(=S)[nH]c3cc(C(=O)NCCCN4CCOCC4)ccc3c2=O)c(OC)c1.Cl
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?