Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a) OCCOCCCl
b) CCOP(=S)(CC)SCSCSP(=S)(CC)OCC
c) CCOP(=O)(OCC)SCC1(C)SCCS1
d) C=CCCCOC(=O)C(CC)N(Cc1ccco1)C(=O)n1ccnc1
Answer: a
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}