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, d, or e without using any other words.
Options:
a. COP(=O)(Oc1ccc([N+](=O)[O-])c(C)c1)SC
b. CCC(=O)OCC=Cc1ccccc1
c. CCOP(=S)(CC)Oc1ccc(Cl)cc1Cl
d. COP(C)(=S)Oc1ccc(Cl)cc1Cl
e. CC(C)=CCOC(=O)c1ccccc1
Answer: b
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}