Using OCC[C@H]1CCc2sc3ncnc(OC4CCC(N5CCOCC5)CC4)c3c21 to produce O=CC[C@H]1CCc2sc3ncnc(OC4CCC(N5CCOCC5)CC4)c3c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.