2,4-Bis(3-acetylphenyl)-4-methyl-1 or 2-pentene
2,4-Bis(3-acetylphenyl)-4-methyl-1 or 2-pentene ??
??
2,4-Bis(3-acetylphenyl)-4-methyl-1 or 2-pentene C??? ??, ??, ??
2,4-Bis(3-acetylphenyl)-4-methyl-1 or 2-pentene ?? ?? ? ???
???
?? ??
2,4-Bis(3-acetylphenyl)-4-methyl-1 or 2-pentene ?? ??
???( 0)?? ??