Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) O=C(c1ccc2ccccc2n1)N1CCN=C1Nc1c(Cl)cccc1Cl
(b) CC(C)(COC(N)=O)COC(N)=O
(c) CCCC1(CC(=O)O)OCCc2c1[nH]c1ccccc21
(d) CCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO
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}