COC(C/C=C\C=C\CC/C=C/CC(C)/C=C/C(=C\C(=O)O)CC(=O)O)/C(C)=C\C=C(/C)C(=O)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?