# The Dark Carbon Rises

Chemistry Level 4

Compound E reacts with atomic Carbon to give F. Knowing that F is a hydrocarbon with $$pK_a = 20.1$$ and that after deprotonation, the anion is aromatic and has only 4 signals in H-RMN, find the number of signals for F in H-RMN.

Hint: C is a diol and E has 4 double bonds.

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