Question: A compound (C4H6) has two signals of approximately equal intensity in its 13C NMR spectrum; one is a CH2 carbon at 30.2 ppm, the other

A compound (C4H6) has two signals of approximately equal intensity in its 13C NMR spectrum; one is a CH2 carbon at δ 30.2 ppm, the other a CH at δ 136 ppm. Identify the compound.

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