CC(=O)/C(Br)=C(/C)O    mol31191    0_1
[CH2-]/C(O)=C(\Br)C(C)=O    mol31191    -1_1
[CH2-]C(=O)/C(Br)=C(/C)O    mol31191    -1_2
CC(=O)/C(Br)=C(/C)[O-]    mol31191    -1_3