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, d, or e without using any other words.
Options:
a CCCCC(CC)COC(=O)c1ccccc1C(=O)OCC(CC)CCCC
b CCCCNC(=O)c1ccccc1
c N#Cc1ccc([N+](=O)[O-])cc1C#N
d CCOc1ccc(C=O)cc1
e Cc1ccc2c(Cl)cc(Cl)c(O)c2n1
Answer: a
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}