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.) COc1ccc2cc(CCC(C)=O)ccc2c1
b.) CC(=O)C=Cc1ccccc1
c.) CCOP(=O)(NC(=S)Nc1ccccc1NC(=O)NS(=O)(=O)c1ccc(C)cc1)OCC
d.) COP(=S)(OC)SCC(=O)N(c1ccc(Cl)cc1)C(C)C
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}