2-Butenedioic acid (Z)-, monoisooctyl ester, dianhydride with antimonic acid (H3SbO), monoisooctyl ester 2-Butenoic acid, 4,4'-(((isooctyloxy)stibylene)bis(oxy))bis(4-oxo-,diisooctyl ester, (2Z,2'Z)- 71850-86-7