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, or d without using any additional words.
Options:
a.) CCON=C(OC(=O)c1ccccc1)c1c(OC)ccc(Cl)c1OC
b.) O=NN1CCSC1
c.) CCOC(=O)C1CCc2cc(C3CCCCC3)ccc21
d.) OC1(c2ccccc2)c2cc(F)ccc2C2=NCCN21
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}