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. O=Cc1cccs1
b. CCOc1ccc(-n2c(C)nc3ccccc3c2=O)cc1
c. CC1(C)CC(NC2CC(C)(C)NC(C)(C)C2)CC(C)(C)N1
d. OCC1CCc2cc(C3CCCCC3)ccc21
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}