Using Cc1[nH]c(=O)c2c(cc(C=O)c3nc(Nc4c(Cl)cccc4Cl)n(C)c32)c1C, NCCO to produce Cc1[nH]c(=O)c2c(cc(CNCCO)c3nc(Nc4c(Cl)cccc4Cl)n(C)c32)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.