[CH2-]C(=O)/C=C(O)/C=C(/C)O    mol31146    -1_1
CC(=O)/C=C(O)/C=C(/C)[O-]    mol31146    -1_2
CC(=O)/C=C([O-])/C=C(/C)O    mol31146    -1_3
[CH2-]C(=O)/C=C(O)/C=C(/C)[O-]    mol31146    -2_1
[CH2-]C(=O)/C=C([O-])/C=C(/C)O    mol31146    -2_2
CC(=O)/C=C([O-])/C=C(/C)[O-]    mol31146    -2_3