CCCS(=O)(=O)c1c(S(=O)(=O)CCC)c2ccc(C(N)=O)cn2c1C(=O)c1ccc(F)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?