Using COC(=O)c1c(Oc2nc(OC)cc(OC)n2)ccc2c(C)noc12 to produce COc1cc(OC)nc(Oc2ccc3c(C)noc3c2C(=O)O)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.