0 B9R0.23 C(C(C(=O)CBr)Br)C(=O)O ZERO/010869 [1,1,0,0,0,0|2,0,0]=4 1 B7R0.2 COC(=O)C[N+](=O)[O-] ZERO/001435 [1,0,0,0,1,0|1,0,1]=4