Using OO, COC(=O)CCNC(=O)c1ccc2c(c1)nc(-c1ccc(C(=N)N)cc1)n2CCCN1CCSCC1 to produce COC(=O)CCNC(=O)c1ccc2c(c1)nc(-c1ccc(C(=N)N)cc1)n2CCCN1CCS(=O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.