3(2H)-benzofuranone, 2-[[4-(acetyloxy)phenyl]methylene]-6-methoxy-, (2Z)- 4-[(Z)-(6-methoxy-3-oxo-1-benzofuran-2(3H)-ylidene)methyl]phenyl acetate InChI=1/C18H14O5/c1-11(19)22-13-5-3-12(4-6-13)9-17-18(20)15-8-7-14(21-2)10-16(15)23-17/h3-10H,1-2H3/b17-9