InChI=1S/C16H9F21O2/c1-5(2)6(38)39-4-3-7(17,18)8(19,20)9(21,22)10(23,24)11(25,26)12(27,28)13(29,30)14(31,32)15(33,34)16(35,36)37/h1,3-4H2,2H3