Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a. c1ccsc1
b. NN1C(=O)CSC1=S
c. C=CCn1c(=O)c2[nH]c(C)nc2n(CC(C)C)c1=O
d. Cc1ccccc1-n1c(CF)nc2ccc(N)cc2c1=O
Answer: d
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}