Cc1ccc(S(=O)(=O)n2c3c(c4ccccc42)CCN2C(=O)C(S(=O)(=O)c4ccccc4)=CCC32)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?