Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) O=S(=O)(O)NC1CCCCC1
(b) CC(C)=CCCC(C)CCO
(c) CC(=O)C1=C(O)C2C3c4c[nH]c5cccc(c45)CC3C(C)(C)N2C1=O
(d) C=CCOC(=O)OC(=C)C(=O)OCC=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}