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 other words.
Options:
a. CCOP(=S)(OCC)SC1CCSC1
b. CNc1c(Cl)cc(C(=O)NC2CC2)cc1Cl
c. CN(SSC(C)(C)C)C(=O)ON=C1SCCS1
d. CC1(C)CC(NC2CC(C)(C)NC(C)(C)C2)CC(C)(C)N1
e. CN1C(=O)CN2CCc3ccccc3C2c2cc(Cl)ccc21
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}