Using O=S1(=O)CCNCC1, COCc1nc2c(N)nc3cc(CCC(=O)O)ccc3c2n1CC(C)(C)O to produce COCc1nc2c(N)nc3cc(CCC(=O)N4CCS(=O)(=O)CC4)ccc3c2n1CC(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.