please I need help with this question. I need answers for both a and b

7. You are given an unknown ML3X3 sample. To determine its structure, you measure an NMR spectrum of this sample and find that there are two sets of L signals in a 2:1 ratio and two sets of X signals in a 2:1 ratio. a. (1 pt) Propose a structure consistent with this NMR spectrum and assign its point group. Justify your structures in words. b. (1 pt) You are given a different sample, also with ML3X3 composition. This time, your NMR spectrum shows 1 set of L and 1 set of X signals. Propose a structure consistent with this NMR spectrum and assign its point group. Justify your structures in words