Using CCOC(C)=O, COC(=O)CCNC(=O)c1ccc(NCCCN2CCSCC2)c(N)c1 to produce COC(=O)CCNC(=O)c1ccc(NCc2cccnc2)c(N)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.