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 additional words.
Options:
[a] Cc1ncc(CO)c(C(=O)O)c1O
[b] CCCCOP(=O)(OCCO)OCCCC
[c] CN(C)c1ccc(-c2nc(=O)n(C)nc2-c2ccc(N(C)C)cc2)cc1
[d] CC(=O)OC1=C(c2c(C)cc(C)cc2C)C(=O)c2ccccc21
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}