Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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) CCCCC(CC)COC(=O)COc1cc(Cl)c(Cl)cc1Cl
(b) O=COCCc1ccccc1
(c) CNC(=O)Nc1ccccc1
(d) O=[N+]([O-])c1ccc(Oc2ccc(Cl)cc2Cl)cc1
(e) CC=CCOCN(C(=O)CCl)c1c(CC)cccc1CC
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}