Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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) COP(=O)(OC)OC(=C(Cl)Cl)c1ccc(Cl)cc1Cl
b) COc1ccc([N+](=O)[O-])cc1N
c) c1ccc(C(c2ccccc2)(c2ccccc2)N2CCOCC2)cc1
d) C=CCNC(=O)NS(=O)(=O)c1ccc(Cl)cc1
e) CCCN=C(NCCC)C(OCC)c1ccccc1
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}