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 additional words.
Options:
(a) C=C(Cl)C(=O)Nc1ccc(OC)cc1
(b) CCCCOC(=O)Cc1ccc(N(CCCl)CCCl)cc1
(c) O=[N+]([O-])c1ccc(C=Cc2cccc(CO)n2)o1
(d) CCC(C(=O)O)c1ccc(CC(C)C)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}