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 additional words.
Options:
a: CCNc1nc(Cl)nc(N(CC)CC)n1
b: CCc1oc2ccccc2c1C(=O)c1cc(Br)c(O)c(Br)c1
c: Cc1nccnc1C
d: COc1nc(C)nc(NC(=O)NS(=O)(=O)c2ccccc2Cl)n1
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}