CC(C)C[C@H]1CNC(=S)N1C[C@H]1CCCN1C[C@H](Cc1ccc(O)cc1)N1C[C@H](Cc2ccc(O)cc2)N(CC2CCCCCC2)C1=S
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?