Using OCC1CCN(c2nccnc2C2CCNCC2)CC1, Clc1ccc2ccccc2n1 to produce OCC1CCN(c2nccnc2C2CCN(c3ccc4ccccc4n3)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.