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, or d without using any other words.
Options:
a) CCOP(=S)(OCC)SCn1nc(Br)ccc1=O
b) CN1C(C(=O)Nc2ccccn2)=C(OC(=O)C(C)(C)C)c2sc(Cl)cc2S1(=O)=O
c) CNc1cccc2ccccc12
d) CC(C)OC(=O)Nc1cccc(Cl)c1
Answer: d
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}