24 aliphatic, 54 oxygen containing sp3 carbon, 168 and 177 carboxyl or amide.

Are these the only 4 signals?

Dear Dr Anklin, thank you so much for your reply. i suspect there are other very short signals at 72, 72.t, 75. 76. 91., 104. 122. , 137, 210 ...but i'm not sure whether they are noise or signals

coz from ms fragmentation, i thought it was a saponin but now i'm lost.

Attached are the spectra