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) NCCOCCO
(b) CC(=O)CCC(C)C
(c) N=C1C=C(Br)C(=O)c2c(N)cc(Br)c(O)c21
(d) FC1(F)CC(C2CC3(Cl)C(Cl)=C(Cl)C2(Cl)C3(Cl)Cl)C1(F)F
(e) CNC(=O)OC1CC(C)CCC1C(C)C
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}