CCC(C)[C@H](NS(=O)(=O)c1ccc(C)cc1)C(=O)N1CCC(C(=O)N2CCC(C(=O)OC)CC2)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?