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) CCOc1ccc(C2(c3ccc(OCC)cc3)CC2(Cl)Cl)cc1
(b) FC(F)(F)c1nc2c(Cl)cc(Cl)cc2[nH]1
(c) CCOP(=O)(Cl)OCC
(d) Oc1cc(O)cc(Sc2cc(O)cc(O)c2)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}