CC(C)(C)C1C(=O)NC(=O)NC1=O mol13898 0_1 CC(C)(C)C1C(=O)NC(=[OH+])NC1=O mol13898 1_1 CC(C)(C)C1C(=O)NC(=O)NC1=[OH+] mol13898 1_2 CC(C)(C)C1C(=[OH+])NC(=O)NC1=[OH+] mol13898 2_1 CC(C)(C)C1C(=O)NC(=[OH+])NC1=[OH+] mol13898 2_2 CC(C)(C)C1C(=O)[N-]C(=O)NC1=O mol13898 -1_1 CC(C)(C)[c-]1c(=O)[nH]c(=O)[nH]c1=O mol13898 -1_2