Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: CCOC(=O)C1=CN(C(=O)c2ccccc2)C2CCCC(C)N2C1=O
b: CC(C(=O)O)c1ccc2oc(-c3ccc(Cl)cc3)nc2c1
c: CCNc1nc(NCC)nc(SC)n1
d: O=[N+]([O-])c1cc(C2CCCCC2)c(O)c([N+](=O)[O-])c1
e: Clc1cccc(C2CCCCC2)c1Cl
Answer: e
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}