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. CCOP(=O)(Cl)OCC
b. CCCCCCCCOC(C)=O
c. CCOC(=O)C1=CN(C)C2CCCC(C)N2C1=O
d. CC(SCC(=O)O)c1ccc2c(c1)Cc1ccccc1-2
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}