Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a.) CC1CCCC(C)N1CCCNc1n[nH]c2ccccc12
b.) C=COC(=O)CCCCCCC
c.) O=C1c2ccccc2C(=O)C1c1c(Cl)cccc1Cl
d.) CCCCOCCC#N
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}