Using c1ccc(CN2CCc3c(ncnc3Nc3ccc4c(c3)OCCO4)C2)cc1 to produce c1nc2c(c(Nc3ccc4c(c3)OCCO4)n1)CCNC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.