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] CC(O)Cn1cnc2c1c(=O)n(C)c(=O)n2C
[b] CCOC(=O)C(C)N(C(=O)c1ccccc1)c1ccc(Cl)c(Cl)c1
[c] Nc1c(I)cc(I)c(C(=O)N(CCC(=O)O)c2ccccc2)c1I
[d] CCCCN1C(=O)C2CC=CCC2C1=O
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}