Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. CC1=COC(C)(C=O)CC1
b. O=C1CSC(=S)N1
c. CCON=C(OC(=O)c1ccccc1)c1c(OC)ccc(Cl)c1OC
d. CNc1nc(Cl)nc(NC(C)C)n1
e. CC12CC=CCC1C(=O)OC2=O
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}