CC(C)C[C@H]1C(=O)N2CCCC2[C@]2(O)O[C@](NC(=O)[C@@H]3C=C4c5cccc6[nH]cc(c56)CC4N(C)C3)(C(C)C)C(=O)N12
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?