Using O=Cc1ccc(Oc2nc3ncccc3s2)cc1, OCC1CNCCO1 to produce OCC1CN(Cc2ccc(Oc3nc4ncccc4s3)cc2)CCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.