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.) CCc1ncc(C)nc1C
b.) COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
c.) Cc1ccc(O)c(C2CCCCC2)c1
d.) CC(Cc1ccccc1)NCCC(c1ccccc1)c1ccccc1
Answer: b
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}