Using OCCOCCCl, COc1cc2c(cc1OC)CN(CCCCNC(=O)c1cc(C)ccc1O)CC2 to produce COc1cc2c(cc1OC)CN(CCCCNC(=O)c1cc(C)ccc1OCCOCCO)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.