Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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: COc1c(Cl)ccc(Cl)c1C(=O)OCCN(CCOC(=O)c1c(Cl)ccc(Cl)c1OC)c1ccccc1
b: O=C(c1ccccc1)c1ccc(O)cc1O
c: O=C(c1ccc(O)c(O)c1)c1cccc(O)c1O
d: c1ccc(Nc2ccc3ccccc3c2)cc1
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}