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SMILES: OC(=O)c1cc(=O)[nH]c(=O)[nH]1 Canonical SMILES: O=c1[nH]c(=O)[nH]c(c1)C(=O)O InChI: InChI=1S/C5H4N2O4/c8-3-1-2(4(9)10)6-5(11)7-3/h1H,(H,9,10)(H2,6,7,8,11) InChIKey: PXQPEWDEAKTCGB-UHFFFAOYSA-N
CBID:2011 http://www.chembase.cn/molecule-2011.html