Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CN=C=S
b. CCN(CC)CCOc1ccccc1-n1c(C)ccc1-c1ccccc1
c. ClC=CCCl
d. O=C(C=CC(=O)OCCCl)OCCCl
e. CNC(=O)OC1C2(C)CCC(C2)C1(C)C
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}