(b) Whoever, without intent to cause death, proximately causes the death of a human being by, directly or indirectly, unlawfully selling, giving away, bartering, delivering, exchanging, distributing, or administering a controlled substance classified in Schedule I or II, is guilty of murder in the third degree and may be sentenced to imprisonment for not more than 25 years or to payment of a fine of not more than $40,000, or both. see full law