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, d, or e without using any additional words.
Options:
[a] CN(CCCl)CCCl
[b] CN1C(=O)C(O)N=C(c2ccccc2)c2cc(Cl)ccc21
[c] COC(=O)C1=C(C)NC(C)=C(C(=O)OC)C1c1ccccc1OC(F)F
[d] CCCCC(CC)OCCOCCO
[e] CNC(=S)NCCSCc1nc[nH]c1C
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}