Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a. CCCn1c(=O)c2[nH]c(C)nc2n(CC(C)C)c1=O
b. CN1CCC(c2c[nH]c3ccccc23)C1
c. CC1=COC(C)(C=O)CC1
d. CCCCCCCCCc1cc(C)cc(Cc2cc(C)cc(CCCCCCCCC)c2O)c1O
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}