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, d, or e without using any other words.
Options:
a: CCOP(=O)(OCC)SCc1nnc(CC(C)C)o1
b: Nc1ncc2nc[nH]c2n1
c: Cc1cc(C2(c3ccc(O)c(C)c3)C(=O)Nc3ccccc32)ccc1O
d: CCCOP(=S)(OCCC)OP(=S)(OCCC)OCCC
e: CCCCC(CC)COCC(CC)CCCC
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}