39 Draw the structure corresponding to each IUPAC name. a. 3-ethyl-2-methylhexane b. sec-butylcyclopentane c. 4-isopropyl-2,4,5-trimethylundecane d. cyclobutylcycloheptane e. 3-ethyl-1,1-dimethylcyclohexane f. 4-butyl-1,1-diethylcyclooctane g. 6-isopropyl-2,3-dimethyldodecane h. 2,2,6,6,7-pentamethyloctane i. cis-1-ethyl-3-methylcyclopentane j. trans-1-tert-butyl-4-ethylcyclohexane