Using CCOC(=O)Cl, Cc1c(SCCN2CCOCC2)ccnc1CSc1nc2ccccc2[nH]1 to produce CCOC(=O)n1c(SCc2nccc(SCCN3CCOCC3)c2C)nc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.