CCOc1ccc(S(=O)(=O)Nc2ccc3c(c2)c2c(n3S(=O)(=O)c3ccc(OCC)cc3)CCCC2=O)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?