Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] COP(=O)(OC)OC(=CCl)c1ccc(Cl)cc1Cl
[b] CN(N=O)c1ccccc1
[c] Cc1cc(C(=O)c2ccccc2)ccc1N
[d] OCCSSc1c(Cl)c(Cl)c(Cl)c(Cl)c1Cl
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}