CC(C)(C)OC(=O)C[C@@H]1C/C=C\C[C@H](CC(=O)NCCO)C(=O)NC[C@@H](c2ccccc2)OC1=O
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?