Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
(a) NCCOS(N)(=O)=O
(b) ClCC(Cl)Cl
(c) C=COCCSCCCC
(d) O=[N+]([O-])c1cc([N+](=O)[O-])c(Nc2c(Br)cc(Br)cc2Br)c(C(F)(F)F)c1
(e) CC(C=O)CC(C)(C=O)CO
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}