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, or d without using any other words.
Options:
(a) CCCSP(C)(=S)SC(CC(=O)OCC)C(=O)OCC
(b) CC(O)C1CC=CCC1
(c) CCOP(=O)(OCC)SCN1C(=O)c2ccccc2C1=O
(d) O=[N+]([O-])C(CO)(CO)CO
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}