By 1800, 1407, 1369 position is similar to that found in the upper part of the no2 spectrum B4605151 Grease (slide 5). And peak position of 1260, 1082, 1017, 800 is similar to that found in the lower part of the spectrum Monoloop B4605151 (slide 6).
By position 1450,1407,1369 Is similar to that observed in the spectrum of Grease no2 B4605151 upper part (slide 5) and peak position 1260,1082,1017,800. Is similar to that observed in the spectrum of Monoloop B4605151 lower part (slide 6).