Using COc1cc2c(Cl)ncnc2cc1OCCCl, Nc1ccnc2c1OCO2 to produce COc1cc2c(Nc3ccnc4c3OCO4)ncnc2cc1OCCCl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.