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.) CCOCC(O)(c1ccc(Cl)cc1)c1ccc(Cl)cc1
b.) CCCCCOC(CBr)c1ccc(C2CCCCC2)cc1
c.) c1ccc(Cc2ccccc2)cc1
d.) COc1ccccc1NC(=O)CNC(=O)Cc1ccc(C(=O)c2ccc(C)cc2)n1C
e.) COc1cc2c(cc1OC)C1C(=O)c3ccc4c(c3OC1CO2)CC(C(C)C)O4
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}