Using CCc1nc2c(cnn2CC)c(NC2CCOCC2)c1CN, CCOc1c(OCC)c(=O)c1=O to produce CCOc1c(NCc2c(CC)nc3c(cnn3CC)c2NC2CCOCC2)c(=O)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.