Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a) COc1c(Cl)ccc(Cl)c1C(=O)O
b) OCC1OC(n2cnc3c(NCC(c4ccccc4)c4ccccc4)ncnc32)C(O)C1O
c) CCOP(=O)(OCC)Oc1ccc(SC)c(C)c1
d) COP(=O)(OC)Oc1ccc(S(C)(=O)=O)c(C)c1
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}