Chemical Name: 2,4-Dichlorobenzoic anhydride
Smiles: O=C(C(C=CC(Cl)=C1)=C1Cl)OC(C(C=CC(Cl)=C2)=C2Cl)=O
Inchi: InChI=1S/C21H25ClN2O3/c22-19-8-6-18(7-9-19)21(17-4-2-1-3-5-17)24-12-10-23(11-13-24)14-15-27-16-20(25)26/h1-9,21H,10-16H2,(H,25,26)/t21-/m1/s1/i14D2,15D2