Identify the liquid unknown from the list

Unknown Liquid Reagents Acetone [ketone, CH3COCH3] Acetonitrile (nitrile, CH3CN] Acetophenone [aromatic ketone, Ar-COCH3] Acetylacetone [ketone, CH3COCH2COCH3] Aniline [aromatic amine, Ar-NH2] Anisole (aromatic ether, Ar-O-CH3] Benzaldehyde [aromatic aldehyde, Ar-CHO] Benzonitrile (aromatic nitrile, Ar-C=N] Benzyl alcohol [aromatic alcohol, Ar-CH2OH] 1-Butanol [alcohol, CH3CH2CH2CH2OH] 2-Butanone [ketone, CH3COCH2CH3] Butyl Acetate (ester, CH3COO(CH2)3CH3] Butyric acid (carboxylic acid, R-CO2H] trans-Cinnamaldehyde [aromatic aldehyde, RCH=CHCHO] m-Cresol (aromatic alcohol, CH3-Ar-OH] Cyclohexanol [alcohol, C6H110H) Cyclohexene [alkene, C6H10] Cyclohexyl acetate (ester, CH3COOC.H ] 1,4-Dioxane (cyclic ether, C4H8O2] 1-Methyl-2-pyrrolidinone (cyclic amide, CsH9NO] Ethylene glycol (di-alcohol, HOCH2CH2OH] 4-Hydroxy-2-butanone [alcohol-ketone, HOCH2CH2COCH3] Limonene (cyclic alkene, C10H16] Methyl benzoate (aromatic ester, Ar-CO2CH3] 3-Methyl-1-butanol (alcohol, (CH3)2CHCH2CH2OH] 2-Methyl-3-hexanone [ketone, CH3CH2CH2COCH(CH3)2] tert-butyl Methyl ether (ether, (CH3)3COCH3] Nitrobenzene [aromatic nitro compound, Ar-NO2] Petroleum ether (ether] 2-Propanol (alcohol, (CH3)2CHOH] Styrene (aromatic alkene, Ar-CH=CH2] Toluene [aromatic alkane, Ar-CH3] Triethylamine (amine, C6H5CH2OH) 0-Xylene [aromatic alkene, Ar-(CH3)2] nzene ring Page 3 100 95 3065.50 Lim 1598.52 90 1178.16 1287.58 1070/93 926.33 85 1000.59 11447.17 80 1026.05 75 70 2228.22 1490.47 65 60 % Transmittance 55 50 - 45 40 35 30 685.44 1545.98 25 25 20 15 754.82 4000 3800 3600 3400 3200 3000 2800 2600 2400 2000 1800 1600 1400 1200 1000 800 600 2200 Wavenumbers (cm-1)