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] O=[N+]([O-])c1ccc(C=NNC(=S)N2CCCC2)o1
[b] CCN(CC)C(=O)N1CCN(CC(=O)NN=Cc2ccc([N+](=O)[O-])o2)CC1
[c] CN(N=Nc1ccccc1)N=Nc1ccccc1
[d] C1CCC2OC2C1
Answer: d
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}