C=CC[C@@H]1C=C[C@@H](O/N=C\c2ccc(C(=O)N3[C@H](C(=O)OC)CC[C@H](C)[C@H]3c3ccc(C)cc3)cc2)[C@@H](CO)O1
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?