CC(C)=CCCC(C)=CCCC(C)=CCCC(O)C1=C2C=C3C(C)=C(C=C)C4=[N]3[Fe++]35N6C(=C4)C(C)=C(CCC(O)=O)C6=CC4=[N]3C(=CC(N25)=C1C)C(C=O)=C4CCC(O)=O