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, or d without using any other words.
Options:
a.) CN(C)C(=O)Oc1ccccc1C1SCCS1
b.) CCCCN(CCCC)CC(C)O
c.) C#CCOCC#C
d.) CC(C)=CCC(CCN1CCOCC1)(C(N)=O)c1cccc2ccccc12
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}