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, or d without using any other words.
Options:
[a] COC(=O)C=Cc1ccccc1
[b] CCOC(C1=NCC(C)(C)CN1)c1cccc(Cl)c1
[c] COc1ccc(C(=O)CCC(=O)O)c2ccccc12
[d] COC(=O)c1c(Cl)c(Cl)c(C(=O)OC)c(Cl)c1Cl
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}