120 12 TEE 10 DO 210 Relative Intensity 218 220 221 401 210 OL 215 217 218 219 220 221 222 m / z 20 217 51 132 LE 1`5 TITE* THE BEY 18 2 25 50 75

Why 8 is spectrum not match and 4 spectrum matched?

12012TEE10DO210Relative Intensity218220221401210OL215217218 219220221222m / z2021751132LE1`5TITE* THE BEY18 225507510012515017.5200m / ZOdd molar mass = 217 > N present .Asymmetric M + 2, M + 4 signals > Cl present .just one C! ? ?!+ IN , 101 – 168: C13 HAZ CIN , degrees of unsaturation =2 X 13 + 2 – 1_ _ _ _ _ _ 8. spectrum did not match .or CIzHZACIN , degrees of unsaturation =2 X 12 + 2 – 24 – 1 + 1_ = 1 , no spectrum available .+ IN , 201 – 133: CoHig CLEN , degrees of unsaturation =2 X 10 + 2 – 13 _ _ _ _ _ A spectrum matched .