Using CS(=O)(=O)CCCO, Cc1c(O)cn2ncnc(Oc3ccccc3)c12 to produce Cc1c(OCCCS(C)(=O)=O)cn2ncnc(Oc3ccccc3)c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.