Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
[a] COP(=S)(OC)SC(SP(=S)(OC)OC)c1ccccc1
[b] CC(=O)c1cccc(Oc2ccccc2)c1
[c] O=C(O)COc1ccc2ccccc2c1
[d] Nc1cc(Cl)c(N)c(Cl)c1
Answer: c
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}