Using ON=C1c2ccccc2-c2c1cccc2-c1nc2c([nH]1)CCCC2 to produce NC1c2ccccc2-c2c(-c3nc4c([nH]3)CCCC4)cccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.