Using CCOC(=O)Cn1c(=O)c(C2=NS(=O)(=O)c3ccccc3N2)c(O)c2cccnc21 to produce O=C(O)Cn1c(=O)c(C2=NS(=O)(=O)c3ccccc3N2)c(O)c2cccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.