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.) CNC(=O)C(Cl)C(C)=O
b.) Oc1ccc(Sc2ccc(O)cc2)cc1
c.) O=C(OC(=O)C(Cl)Cl)C(Cl)Cl
d.) CCC(=O)OCC(COC(=O)CC)OC(=O)CC
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}