Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a) OCCOCCOc1ccccc1
b) CCOC(C1=NCC(C)CN1)c1ccc(Cl)cc1
c) CC(C)(C)C(=O)COc1ccc(Cl)cc1
d) [O-][n+]1onc2c1c1no[n+]([O-])c1c1no[n+]([O-])c21
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}