Cc1ccc(NC(=O)c2[nH]cnc2C(=O)NCCCCCCNC(=O)c2nc[nH]c2C(=O)Nc2ccc(C)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?