Clc1ccc(-c2ccc(-c3nnc(COc4ccc(OCc5nnc(-c6ccc(-c7ccc(Cl)cc7Cl)o6)o5)c(Cl)c4)o3)o2)c(Cl)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?