Oc1ccc(C[C@H]2CN([C@@H](Cc3ccc(O)cc3)CN3CCC[C@@H]3CN3C(=S)NC[C@@H]3Cc3ccccc3)C(=S)N2CCc2ccccc2)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?