Task: Please estimate if the compound with the SMILES O=c1oc(-c2cccs2)nc2sc3c(c12)CCCC3 is an inhibitor of factor XIa (FXIa).
Result: no
Task: Please {#determine|predict|estimate!} if the {#molecule|compound!} with the {SMILES__description} {SMILES#} is {MUV-846__names__noun}.
Result: {MUV-846#no&yes}
2-thiophen-2-yl-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one