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, d, or e without using any other words.
Options:
a: NCC(CC(=O)O)c1ccc(Cl)cc1
b: Clc1c(Cl)c(Cl)c2c(c1Cl)Oc1ccccc1O2
c: COc1ccc2c(c1)N(CC(C)CN(C)C)c1ccccc1S2
d: CCCCOc1ccc(CC(=O)NO)cc1
e: Nc1ccc([N+](=O)[O-])cc1Cl
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}