2-Butenedioic acid (Z)-, monoisooctyl ester, trianhydride with antimonic acid (H3SbO3) 2-Butenoic acid, 4,4',4''-(stibylidynetris(oxy))tris(4-oxo-, triisooctyl ester, (2Z,2'Z,2''Z)- 71850-87-8