0 B9R0.11 CC(=O)OC(C)(C)C(=O)Br JC10156 [1,1,0,0,0,0|2,0,0]=4 1 B9R0.11 CC(=O)OC(C)(C)C(=O)Cl JC10158 [1,1,0,0,0,0|2,0,0]=4