Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a.) S=C=Nc1cccc2ccccc12
b.) C=CCOc1ccccc1C(=O)NCCO
c.) CN1CCCCC1CCN1c2ccccc2Sc2ccc(S(C)=O)cc21
d.) CC(C)C(NC(=O)COc1ccc(Cl)cc1Cl)C(=O)O
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}