007740: InChI=1.12Beta/C12H12N2O7/c15-10(16)5-4-9(12(18)19)13-11(17)7-2-1-3-8(6-7)14(20)21/h1-3H,4-5H2,6H,9H,(H3-,13,15,16,17,18,19,20,21)/t9-/m1/s1