Assign the peaks in the IR due to the product (from the mixture of furan and maleix anhydride)

+ furan maleic anhydride . or H H H endo exo Transmittance -6 4000 4 6 09 10 12 14 16 18 20 3500 3000 3032.62 3000.59 2500 Wavenumbers (cm-1) 2000 Tiny 1855.18 1807.31 1720.41 1500 1000 1308.75 1227123 1281.52- 1146.44 1114.76 1086.50 1020.86 954.91 929.02 898.82 874.59 829.25 B02-22 771.58 732 38 690.7 671.54 500