Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] CCC=CCC=CCC=CCC=CCC=CCC=CCCC(=O)O
[b] CCC(C)C(C)CO
[c] CCCC1OP(=O)(Cl)OCC1CC
[d] S=c1[nH]n(-c2ccccc2)c(=S)s1
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}