CC1(C)C(=O)C(C(=O)c2ccc(S(C)(=O)=O)cc2[N+](=O)[O-])C(=O)C(C)(C)C1=O mol2690 0_1 CC1(C)C(=O)[C-](C(=O)c2ccc(S(C)(=O)=O)cc2[N+](=O)[O-])C(=O)C(C)(C)C1=O mol2690 -1_1