Which of the following is the condensed structural formula for 3-octyl-2,4,5-trimethylhexane?
O
CH3-CH2-CH(CH3)-CH2-CH2-CH3
CH3-CH2-CH2-CH2-CH2-CH3
CH3-CH2-CH(CH3)-CH3
CH3-CH3-HgC-CH2-CH2-CH2-CH3
CH3-CH3-HgC-CH2-CH2-CH3
CH3-CH2-CH(CH3)
CH3-CH2-CH2-CH2-CH2-CH2-CH3
O
CH3-CH2-CH
CH3-CHO-HO-HO-HO-H5
CH3-CH2-CH2-CH2-CH2-CH3
CH3-CH-CH-CH-CH-HgC-CH2-CH2-CH
CH3-CH-CH-CH-CH-HgC-CH2-CH3