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, or d without using any other words.
Options:
a. NS(=O)(=O)c1ccc2[nH]c(C(F)(F)F)nc2c1
b. CC(C)(C)C(=O)C(Cl)Cl
c. FC(F)(F)c1nc2c(Cl)cc(Cl)cc2[nH]1
d. CCC(CC)COCCOCCCN1C(=O)C2C3C=CC(C3)C2C1=O
Answer: c
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}