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, or d without using any additional words.
Options:
a: CCNc1nc(Cl)nc(NC(C)C)n1
b: O=C(C=Cc1ccccc1)OCc1ccccc1
c: CCOP(=S)(OCC)Oc1cc(-c2ccccc2)on1
d: O=S(=O)(F)C1CCC(S(=O)(=O)F)C1
Answer: c
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}