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13. How many chiral stereoisomers can be drawn for compound A (shown below)? Number of possible stereoisomers 14. The absolute configurations at the carbons labeled C1 and C2 in compound A (shown above) are, respectively: and 15. Compound 1 is correctly named: (A) (1R,2R,4R)-1-ethyl-2,4-dimethylcyclopentane (B) (1S,2S,4S)-1-ethyl-2,4-dimethylcyclopentane (C) (1R,2R,4S)-1-ethyl-2,4-dimethylcyclopentane (D) (1S,2R,4S)-1-ethyl-2,4-dimethylcyclopentane (E) cis-1-ethyl-2,4-dimethylcyclopentane