Using O=C(n1ccnc1)n1ccnc1, COc1ccc(N2CCOCC2)c2sc(C(=O)O)nc12 to produce COc1ccc(N2CCOCC2)c2sc(C(N)=O)nc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.