Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (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: O=Cc1ccccc1Cl
b: O=[N+]([O-])c1ccc(Oc2c(Cl)cc(Cl)cc2Cl)cc1
c: COc1cc(C=CC(N)=O)ccc1O
d: CC(COc1ccc(C(C)(C)C)cc1)OS(=O)OCCCl
Answer: d
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}