O=S(=O)(O)c1ccccc1/N=N\c1ccc(/N=N/c2c(O)ccc3ccccc23)c(S(=O)(=O)O)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?