Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: CC(C)OP(C)(=S)Oc1cc(Cl)c(Br)cc1Cl
b: CCc1cccc(CC)c1N(CNC(C)=O)C(=O)CCl
c: CCOP(=S)(CC)Oc1cc(Cl)c(Cl)cc1Cl
d: O=C(c1ccccc1)C(O)c1ccccc1
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}