O=S(=O)(c1ccccc1)[C@@H]1[C@H]2C=C[C@](CS)(O2)[C@H]1S(=O)(=O)c1ccccc1
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?