Using COCOc1c(C)c(C)c2c(c1C)C(=O)CCS2, ClCCCl to produce COCOc1c(C)c(C)c2c(c1C)C(=O)C1(CC1)CS2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.