Using O=C(c1cc(-c2ccccc2)c(=O)n2ncc3ccccc3c12)N1CCOCC1 to produce O=C(c1cc(-c2ccccc2)c(=O)n2c1-c1ccccc1CN2)N1CCOCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.