CCOC(=O)c1oc2ccc(S(=O)(=O)n3nc(-c4cc(OC)c(OC)c(OC)c4)cc3N)cc2c1C
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?