compound 2-hydroxy-hept-2,4-diene-1,7-dioic acid C7H8O5 UPa:UPC05600 CHEBI:1162 2-hydroxy-hept-2,4-diene-1,7-dioate compound InChI=1S/C7H8O5/c8-5(7(11)12)3-1-2-4-6(9)10/h1-3,8H,4H2,(H,9,10)(H,11,12)/b2-1+,5-3- KEGG:C05600