Using Clc1ncccn1, Cc1ccc(Cn2c(NC3CCCN(CCO)CC3)nc3cccnc32)o1 to produce Cc1ccc(Cn2c(NC3CCCN(CCOc4ncccn4)CC3)nc3cccnc32)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.