Using COc1ccc(Cn2c(NC3CCN(CCN)CC3)nc3ccccc32)cc1 to produce NCCN1CCC(Nc2nc3ccccc3n2Cc2ccc(O)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.