Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a) Cc1cccc(C)c1
b) CCOc1ccccc1OCC(O)CNCCNCC(O)COc1ccccc1OCC
c) CNC(=O)ON=C1CCCC1(C)C#N
d) CCOP(=S)(OCC)SCn1nc(Br)ccc1=O
e) O=CNc1ccc(Br)cc1
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}