Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
[a] CC(C)N(Cc1ccccc1)C(=O)C(C)(C)C
[b] CN(CC=CC#CC(C)(C)C)Cc1cccc2ccccc12
[c] CCN(CCO)c1cccc(C)c1
[d] C1CC2OC2C1OC1CCC2OC12
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}