CC(=O)O[C@H]1CC[C@@]2(C)C(=C/C(=N\[N+](=O)[O-])[C@@H]3C2CC[C@@]2(C)C3CCC2[C@H](C)CCCC(C)C)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?