Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
[a] CCCSP(=S)(OCC)Oc1cnn(C)c(=O)c1OC
[b] O=c1[nH]c(=O)n(C2CC(O)C(CO)O2)cc1Br
[c] CCOc1ccc(N)cc1
[d] O=c1oc2cc(Cl)ccc2n1CCl
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}