COc1ccc(C2c3[nH]c4ccccc4c3C[C@H]3C(=O)N(CC(C)C)CC(=O)N23)c(OC)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?