CH3-CH CH-CH2-C-CH-CH2-CH2-CH, CH, CH3-C-CH 1 What is the IUPAC name for the following? 3-ethyl-3-methyl-4-propylhexane 3-ethyl-3-methyl-4-propylheptane 3-methyl-3-ethyl-4-isopropylhexane 3-methyl-3-ethyl-4-isopropylheptane