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: O=C(O)C1CCC(C(=O)O)C1
b: CN(C)C(=O)N(C(=O)c1ccccc1)c1ccc(Cl)c(Cl)c1
c: O=C(Nc1ccc(Br)cc1)c1cc(Br)cc(Br)c1O
d: O=C(C=Cc1ccccc1)OCC=Cc1ccccc1
e: CCOC(=O)c1cnc2n(c1=O)C(C)CCC2
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}