CC(=O)N[C@@H](c1ccccc1)[C@]1(C)C[C@H]1[C@@H](C)C(=O)Nc1ccc2ccccc2c1
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?