Cc1cccc(N2C(=O)N3[C@@H]4c5ccccc5OC[C@@H]4[C@@H](c4ccccc4)[C@@]3(C)C2=O)c1
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?