Using COC(=O)CCNC(=O)c1ccc(NCCCN2CCSCC2)c(N)c1 to produce COC(=O)CCCNc1ccc(C(=O)NCCC(=O)OC)cc1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.