Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] CCc1cc(C(N)=S)ccn1
[b] C=CCn1c(C)cc(OP(=O)(OC)OC)cc1=O
[c] CC1Cc2cc(C(=O)CCc3ccccc3)ccc2O1
[d] NCCCNCCSP(=O)(O)O
[e] CN(C)N=Nc1cccnc1
Answer: a
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}