InChI=1S/C18H9F25O2/c1-5(2)6(44)45-4-3-7(19,20)8(21,22)9(23,24)10(25,26)11(27,28)12(29,30)13(31,32)14(33,34)15(35,36)16(37,38)17(39,40)18(41,42)43/h1,3-4H2,2H3