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] CCP(=S)(OCCCl)Oc1ccc(C#N)cc1
[b] COP(=S)(OC)SCSc1cc(Cl)cc(Cl)c1
[c] CCN(CC)CCNC(=O)COc1ccc(Cl)cc1
[d] CCNC(C)CN1CCc2c(c(=O)oc3ccccc23)C1
Answer: b
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}