`CH_(2)=CH-underset((I))CH=CH-""^(o+)NH_(3),""^(o+)CH_(2)-CH=CH-""^(Ө)CH-""^(o+)NH_(3)""^(o+)CH_(2)-CH=underset((III))CH-CH=NH_(3)` Which of these str
`CH_(2)=CH-underset((I))CH=CH-""^(o+)NH_(3),""^(o+)CH_(2)-CH=CH-""^(Ө)CH-""^(o+)NH_(3)""^(o+)CH_(2)-CH=underset((III))CH-CH=NH_(3)`
Which of these structures is not a valid canonical structre?
A. I
B. II
C. III
D. none of these
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