Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
[a] CCN1CCCC1CNS(=O)(=O)c1cc(Cl)c(N)cc1OC
[b] OC1(c2ccc(C(F)(F)F)cc2)c2ccccc2C2=NCCN21
[c] CN(C)C1c2ccccc2NC(=O)c2ccccc21
[d] Cc1cn(C2C=CC(CO)O2)c(=O)[nH]c1=O
Answer: c
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}