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 other words.
Options:
a: O=C(O)c1ccc(C(=O)O)c2c(C(=O)O)ccc(C(=O)O)c12
b: O=c1[nH]c2ccc(Cl)cc2o1
c: CCN(CC)C(=O)c1ccc(OC)cc1O
d: CCC(C)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1OC(C)=O
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}