0 B8R0.23 C[C@@H](C(=O)[O-])NC(=O)C N-Acyl-Ala-S [0,0,0,0,2,0|2,0,0]=4 1 B8R0.23 C[C@H](C(=O)[O-])NC(=O)C N-Acyl-Ala-R [0,0,0,0,2,0|2,0,0]=4