CC(=O)OC1[C@H](n2ccnc2)C[C@H]2[C@@H]3CC=C4CC(N5CCCC5)CC[C@]4(C)[C@H]3CC[C@]12C
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?