Complex sentence: Trimethyldiborane, (CH 3) 3 BH 3 is an alkylborane, consisting of three methyl group substituteds for a hydrogen in diborane.
Split into simpler sentences: Trimethyldiborane, (CH 3) 3 B 2 H 3 is a molecule containing boron carbon and hydrogen. It is an alkylborane, consisting of three methyl group substituted for a hydrogen in diborane.