Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] CCCN=C(C(OCC)c1ccccc1)N1CCCCCC1
[b] CCSCCSP(=O)(OC)OC
[c] O=C(O)CCc1nc(-c2ccccc2)c(-c2ccccc2)o1
[d] C=CCOC(OCC=C)C(OCC=C)OCC=C
[e] C=C[Si](OC)(OC)OC
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}