O=S(=O)(c1ccc2c(c1)OCCO2)N1C[C@@H]2C[C@H]1CN2S(=O)(=O)c1c(F)cccc1F
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?