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, or d without using any other words.
Options:
a.) COP(=S)(OC)Oc1ccc(S(=O)(=O)c2ccc(OP(=S)(OC)OC)cc2)cc1
b.) CCOP(=O)(OCC)SCc1nnc(CC)o1
c.) CC(C)OC(=O)C(Cl)(Cl)Cl
d.) ClCCl
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}