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, or c without using any other words.
Options:
a) COCC(=O)N(C)C(=O)Oc1ccccc1OC(C)C
b) O=S(=O)(Cl)c1ccccc1Cl
c) CCCCn1ncc(OP(=S)(OCC)OC(C)C)c(OC)c1=O
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}