Chemical Name: (Phthalazine-1,4(2H,3H)-diylidene)dihydrazine sulfate (as per EP)
Smiles: N/N=C1NN/C(C2=C\1C=CC=C2)=N\N.O=S(O)(O)=O
Inchi: InChI=1S/C18H13ClFN3O/c19-11-5-6-16-14(7-11)18(13-3-1-2-4-15(13)20)22-9-12-8-21-17(10-24)23(12)16/h1-8,24H,9-10H2