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] CCOC(=O)c1c[n+](CC)c2n(c1=O)C(C)CCC2
[b] CN1CCC(CN2c3ccccc3Sc3ccccc32)C1
[c] Cc1ccccc1N=Nc1c(N)ccc2ccccc12
[d] NC(=O)C(c1ccccc1)c1ccccc1
Answer: a
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}