O=C(C[C@@H]1C/C=C\C[C@H](NC(=O)OCC2c3ccccc3-c3ccccc32)C(=O)OC[C@H]2CCCN2C1=O)N[C@@H](CO)Cc1ccccc1
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?