1H-isoindole-1,3(2H)-dione, 2-[(2S,4R)-2-ethoxy-3,4-dihydro-6-(trichloromethyl)-2H-pyran-4-yl]- 2-[(2S,4R)-2-ethoxy-6-(trichloromethyl)-3,4-dihydro-2H-pyran-4-yl]-1H-isoindole-1,3(2H)-dione InChI=1/C16H14Cl3NO4/c1-2-23-13-8-9(7-12(24-13)16(17,18)19)20-14(21)10-5-3-4-6-11(10)15(20)22/h3-7,9,13H,2,8H2,1H3/t9-,13-/m0/s