007711: InChI=1.12Beta/2C8H6N2O2.Cu/c2*11-8-7(10-12)5-3-1-2-4-6(5)9-8;/h1-4H,(H2-,9,10,11,12);1-4H,12H,(H,9,10,11);/q;;-7/p+3