Using Clc1nccnc1N1CCNCC1, Cc1c(C=O)cnn1-c1ccccc1 to produce Cc1c(CN2CCN(c3nccnc3Cl)CC2)cnn1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.