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, d, or e without using any other words.
Options:
(a) COS(=O)(=O)c1ccc(C)cc1
(b) CC(=O)c1ccccc1
(c) CN(C(=O)NC(C)(C)c1ccccc1)c1ccccc1
(d) CC(=O)c1cccc(Oc2ccccc2)c1
(e) CCOP(=S)(Oc1cnn(CC)c(=O)c1OC)OC(C)C
Answer: a
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}