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, d, or e without using any other words.
Options:
a: CN(C)CCN(Cc1ccc(Cl)cc1)c1ccccn1
b: CC(C)(C)C(=O)C(Oc1ccc(Cl)cc1)n1cncn1
c: COCCOCCOC(C)=O
d: CN(C)CCOCCN(C)C
e: NC(=O)C1(N2CCCCC2)CCN(CCCN2c3ccccc3CCc3ccccc32)CC1
Answer: e
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}