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, d, or e without using any other words.
Options:
[a] CCCCCCCCCCCC(=O)O
[b] COP(=O)(OC)OC(Cl)C(Cl)(Br)Br
[c] CC1(C)C2CC=C(C=O)C1C2
[d] COC(=O)Nc1nc2ccccc2[nH]1
[e] COP(=S)(OC)Oc1ccc(S(=O)(=O)c2ccc(OP(=S)(OC)OC)cc2)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}