Cc1ccc(S(=O)(=O)N2[C@@H](c3ccc(C#N)cc3)C(C(=O)O)=C[C@H]2C(C)(C)C)cc1
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?