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] O=C(Cc1ccc2c(c1)OCc1ccccc1C2=O)OCC(O)CO
[b] COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
[c] O=C(O)C1CSCN1
[d] Cc1cc(NS(=O)(=O)c2ccc(N)cc2)no1
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}