Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
(a) CN(Cc1ccc(Cl)cc1Cl)S(N)(=O)=O
(b) C=COP(=O)(OCC)OC(CCl)c1cc(Cl)c(Cl)cc1Cl
(c) Nc1ccc(Oc2ccc(S(=O)(=O)c3ccc(Oc4ccc(N)cc4)cc3)cc2)cc1
(d) CC(NC(=O)COc1ccc(Cl)cc1Cl)C(=O)O
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}