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. COc1ccccc1NC(=O)CC(=O)c1ccccc1
b. CCOC(=O)C1=CN(C(=O)c2ccccc2)C2CCCC(C)N2C1=O
c. Clc1ccc(Cc2ccc(Cl)cc2)cc1
d. COP(=S)(OC)SCc1nc(N)nc(N)n1
e. COc1ccc2c(c1)c(CC(=O)NO)c(C)n2C(=O)c1ccc(Cl)cc1
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}