Using COCCl, Cc1c(C)c2c(c(C)c1O)C(=O)CC1(CCC1)O2 to produce COCOc1c(C)c(C)c2c(c1C)C(=O)CC1(CCC1)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.