Using CC(=O)NCCSCC(CC(=O)O)C(=O)c1cccnc1, CCN=C=NCCCN(C)C to produce CCCOC(=O)CC(CSCCNC(C)=O)C(=O)c1cccnc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.