0 B7R0.5 CCC[C@H](N)C(=O)O 6600-40-4 [2,0,0,0,0,0|1,0,0]=3 1 B7R0.5 NC(CCS)C(=O)O 454-29-5 [2,0,0,0,0,0|2,0,0]=4 2 B7R0.5 N[C@@H](CCO)C(=O)O 672-15-1 [2,0,0,0,0,0|2,0,0]=4