Using S=C(Oc1ccccn1)Oc1ccccn1, Cc1cc(N)c(C)c2[nH]cnc12 to produce Cc1cc(N=C=S)c(C)c2[nH]cnc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.