Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a O=C(CCl)c1ccc(O)cc1
b CCOc1c(OP(=S)(OCC)OC(C)C)cnn(C)c1=O
c Cc1cccc(NC(=S)N(C)C)c1
d CCCSP(C)(=S)Oc1ccc(Cl)cc1Cl
e Cc1cccc(C)c1N(COCC(C)C)C(=O)CCl
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}