Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
(a) CC(O)CC=O
(b) COP(=S)(OC)SC(CBr)N1C(=O)c2ccccc2C1=O
(c) CCOP(=S)(OCC)SCSCSP(=S)(OCC)OCC
(d) C=CC(=O)OCC(CC)CCCC
(e) C=CCN=C=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}