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 CCC1(c2ccccc2)C(=O)NC(=O)NC1=O
b CCCCOC(=O)c1ccccc1C(=O)OCc1ccccc1
c C=CCn1c(C)c(N(C)C)c(=O)n(-c2ccccc2)c1=O
d CC(C)(c1ccc(OCC2CO2)cc1)c1ccc(OCC2CO2)cc1
Answer: a
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}