Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
(a) CNC(=O)Nc1nnc(C(C)(C)C)s1
(b) CC(C)c1ccc(NC(=O)N(C)C)cc1
(c) COc1c(OP(=S)(OCC(C)C)OCC(C)C)cnn(C)c1=O
(d) C#CCOS(=O)OC1CCCCC1Oc1ccc(C(C)(C)C)cc1
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}