Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] COP(C)(=S)SCn1c(=O)oc2cc(Cl)cnc21
[b] O=[N+]([O-])c1cc[n+]([O-])cc1
[c] CC1(C)COS(=O)(=O)OC1
[d] Nc1c(Cl)cc(C(=O)NC2CC2)cc1Cl
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}