2 3 4 5-tetramethyl-2-cyclopentenone July 8, 2019 16 32 64 128 2 3 4 5 tetramethyl 2 cyclopentenone 2 2 4 4-tetramethylcyclobutane-1 3-dione 2 methyl 2 butanol 2 2 4 4-tetramethyl-3-pentanol 2 2 3 4-tetrametilpentan
