Acetylation of Ferrocene Gone Wrong?

I reacted my ferrocene product with acetic acid anhydride and phosphoric acid. Purified it via. flash chromatography and a dark red oil was produced.

I know that my product is not acetylferrocene as the NMR data looks as follows:

1H NMR
δH (300.1 MHz, CDCl3, Me4Si) 3.82, 2.62, 2.17, and 1.24.

13C{1H} NMR
211.0, 69.9, 69.5, 67.9, 53.7, 31.7 and 29.3.

Basically I am really confused as it no longer contains the aromatic regions seen in ferrocene/acetylferrocene at ~4.2 ppm. Any suggestions of what this product could be/what could have gone wrong e.g. moisture?

Thanks