Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a) Clc1ccc2nsnc2c1NC1=NCCN1
b) C=CCOC(=O)C1CC2OC2CC1C
c) CCOC(=O)Nc1cccc(OC(=O)Nc2ccccc2)c1
d) CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC
e) CCCCCO
Answer: c
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}