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) O=C1OCC2C1C1(Cl)C(Cl)=C(Cl)C2(Cl)C1(Cl)Cl
b) CN(N=O)c1ccccn1
c) CCCCCCCCCCCC(=O)OC1=C(c2c(C)cc(C)cc2C)C(=O)c2ccccc21
d) O=c1c(F)cn(C2CCCO2)c(=O)n1C1CCCO1
Answer: d
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}