Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a. CCCOP(=O)(OCCC)Oc1cnn(C)c(=O)c1OC
b. O=C(Cl)c1ccc([N+](=O)[O-])cc1
c. CCC(=O)OCCOc1ccccc1
d. CS(=O)(=O)Oc1ccc(Cl)cc1Cl
e. Cc1onc2c(=O)[nH]nc(-c3ccccc3)c12
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}