[CH2-][n+]1ccc(C(=O)CC(=O)OC)cc1    mol26902    0_1
COC(=O)[CH-]C(=O)c1cc[n+](C)cc1    mol26902    0_2
COC(=O)CC(=O)c1cc[n+](C)cc1    mol26902    1_1