Using O=C(Cl)CCCCCl, Nc1cccc(-c2n[nH]c(=O)c3c2CCCC3)c1 to produce O=C(CCCCCl)Nc1cccc(-c2n[nH]c(=O)c3c2CCCC3)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.