C[C@H]1COC(=O)[C@H](CC(=O)OC(C)(C)C)C/C=C\C[C@@H](CC(=O)N(CCO)Cc2ccccc2)C(=O)N1
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?