Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a CNC(=O)ON=C(C)SCC(N)=O
b CCP(=S)(OC)SCN1C(=O)c2ccccc2C1=O
c CC(=O)NC(N)=S
d CCC=C(C)CO
e CCOC=C(C(=O)OCC)C(=O)OCC
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}