Using Cc1c(CCl)nc2ccc(Cl)cn12, COC(CC1SCCCS1)OC to produce COC(CC1(Cc2nc3ccc(Cl)cn3c2C)SCCCS1)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.