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 other words.
Options:
[a] Cc1cc(-n2c(C)nc3ccccc3c2=O)n(-c2ccccc2)n1
[b] COC(=O)C1C2C=CC(C2)C1C(=O)OC
[c] c1ccc2c(c1)CCCC2
[d] Cc1cc(=NC(=O)c2ccccc2O)n(C)n1C
[e] CCN(CC)CCOc1ccc(C(=C(Cl)c2ccccc2)c2ccccc2)cc1
Answer: b
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}