3300 and 3385 cm-1 (both weak) and no band between 1600 and 1850 cm-1

help a substance has truly infrared absorptions inside subsequent wavelengths: 3300 and 3385 cm-1 (each poor) no group between 1600 and 1850 cm-1 suggest the most probably helpful cluster that could possibly be preser
and tertiary amide

Immediately the choices, the viewers is leftover with is: greatest amine, second

brings about only one group, and teritary amine brings about no rings close to
attempt ~1700
In order that the using can’t be present: ester,
amine, and tertiary amine.
ketone, carboxyl cluster, aldehyde, greatest amide, second amide,
amine

There’s completely no C=O contained on this aspect as a result of reality IR alert for C=O