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 other words.
Options:
a: CC(C)OC(=O)Nc1ccccc1
b: CCCSP(=S)(OCC)Oc1cnn(C)c(=O)c1OC
c: CCC(C)OC(CBr)c1ccccc1
d: CCCCCCCCCCCCOC(CBr)c1ccc(C(C)C)cc1
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}