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 additional words.
Options:
[a] N#CC(c1ccccc1)c1ccccc1
[b] O=C(O)CCC(=O)c1ccc(C2CCCCC2)c(Cl)c1
[c] ON=C1C=CC(=NO)C=C1
[d] O=C(O)Cc1ccc(C2CCCCC2)c(Cl)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}