For each of the compounds described by the following names, 1. draw a three-dimensional representation. 2. star (*) each chiral center. 3. draw any planes of symmetry. 4. draw any enantiomer. 5. draw any diastereomers. 6. label each structure you have drawn as chiral or achiral. (a) (S)-2-chlorobutane (b) (R)-1,1,2-trimethylcyclohexane (c) (2R,3S)-2,3-dibromohexane (d) (1R,2R)-1,2-dibromocyclohexane (e) meso-hexane-3,4-diol, CH3CH2CH(OH)CH(OH)CH2CH3 (f) ({)-hexane-3,4-diol