COCCCNC(=O)C[C@H]1C[C@H](C(=O)N2CCOCC2)[C@@]2(C)c3[nH]c4cc(-c5ccco5)ccc4c3CCN2C1=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?