Using COCN(c1nn(CCOC(C)=O)c(OC)c1-c1ccc2c(c1)OCO2)S(=O)(=O)CCc1ccccc1 to produce COc1c(-c2ccc3c(c2)OCO3)c(NS(=O)(=O)CCc2ccccc2)nn1CCO, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.