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] COc1cc(C(=O)NC2CCCNC2)cc(OC)c1OC
[b] CN(C)CCCN1c2ccccc2CCc2ccc(Cl)cc21
[c] CN(C)CCC=C1c2ccccc2Sc2ccc(Cl)cc21
[d] O=C(O)C1CCc2cc(C3CCCCC3)c(Cl)cc21
Answer: d
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}