`CH_(3)underset(NH_(2))underset(|)(CH)-CH_(2)CH_(2)underset(OH)underset(|)CHCH _(2)CH_(3)`
`CH_(3)underset(NH_(2))underset(|)(CH)-CH_(2)CH_(2)underset(OH)underset(|)CHCH _(2)CH_(3)`
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