Using CCOC(OCC)OCC, Nc1c(NCCOCCCc2cccnc2)c2ccccc2n2nnnc12 to produce c1cncc(CCCOCCn2cnc3c2c2ccccc2n2nnnc32)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.