Using O=C(OC(Cl)(Cl)Cl)OC(Cl)(Cl)Cl, COC(=O)c1cccc(-c2cccc(OCCCCCCN)c2)n1 to produce COC(=O)c1cccc(-c2cccc(OCCCCCCN=C=O)c2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.