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 other words.
Options:
a) O=C(O)c1cc(Cl)cc([N+](=O)[O-])c1Cl
b) CC=Cc1ccc(OC(=O)NC)c(OC)c1
c) COP(=S)(OC)Oc1ccc([N+](=O)[O-])c(Cl)c1
d) O=C(C=Cc1ccccc1)NO
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}