Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a.) CCCCC(CC)COC(CBr)c1cccc(C2CCCCC2)c1
b.) CCSc1nc(NC(C)C)nc(NC(C)C)n1
c.) CC(C(=O)O)c1ccc2oc(-c3ccc(F)cc3)nc2c1
d.) CCOC1CCC=CO1
e.) CN(CCCn1cnc2c1c(=O)n(C)c(=O)n2C)c1ccccc1
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}