Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a: O=C(Cc1ccccc1)OC1=C(OC(=O)Cc2ccccc2)C(=O)OC1=O
b: CC(C)N1C(=O)c2ccccc2NS1(=O)=O
c: COP(=O)(OC)OC(c1ccc(Cl)cc1)P(=O)(OC)OC
d: CC(C)c1noc2nc(C(C)(C)C)ncc12
Answer: c
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}