3-cyclobutene-1,2-dione, 3-methoxy-4-[4-[(E)-2-(3,4,5-tripropoxyphenyl)ethenyl]phenyl]- 3-methoxy-4-{4-[(E)-2-(3,4,5-tripropoxyphenyl)vinyl]phenyl}cyclobut-3-ene-1,2-dione InChI=1/C28H32O6/c1-5-14-32-22-17-20(18-23(33-15-6-2)27(22)34-16-7-3)9-8-19-10-12-21(13-11-19)24-25(29)26(30)28(24)31-4/h8-13,17-18H,5-7,14-16H2,1-4H3/b9-8