CCOc1ccc(S(=O)(=O)N(C)c2ccc(OCC(=O)Nc3nc(-c4cc(OC)ccc4OC)cs3)cc2)cc1
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?