tolong banget banget yaa.. gambar rumus alkana berikut 2-metilbutana, 3-etil-2,5diimetil-4-propilheptana yang bisa aj

•2-metil, butana CH3 | CH3-CH-CH2-CH3 •3-etil, 2,5-dimetil, 4-propil heptana C3H7 CH3 C2H5 | CH3 | | | | CH3-CH-CH-CH-CH-CH2-CH3.