Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] CC(C)(c1ccc(O)cc1)c1ccc(O)cc1
[b] CCOP(=O)(N=C1SCC(C)S1)OCC
[c] CCCC1C2C=CC(C2)C1C=O
[d] Cc1ccc(O)c(C2CCCCC2)c1
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}