ch(-h-ch3-1-c2h5)
Объяснение:
ch3-ch2-ch(ch3)-ch-ch(c2h5)-ch3 = ch(h2-h-ch3-1-c2h5-h2) = ch(-h-ch3-1-c2h5)
ch(-h-ch3-1-c2h5)
Объяснение:
ch3-ch2-ch(ch3)-ch-ch(c2h5)-ch3 = ch(h2-h-ch3-1-c2h5-h2) = ch(-h-ch3-1-c2h5)