Using CCO[Si](CCCNC(=O)NCCCl)(OCC)OCC, [S-2] to produce CCO[Si](CCCNC(=O)NCCSCCNC(=O)NCCC[Si](OCC)(OCC)OCC)(OCC)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.